Proportion Quiz
Practice quiz on Proportion (Elementary Mathematics). 10 exam-style questions with explanations.
About This Quiz
Proportion Quiz — Questions with Solutions
All 10 questions from this quiz with the correct answer and explanation. Attempt them yourself first, then open each solution to check your reasoning.
Q1.If 3 : 5 :: 9 : x, then x =
- A.15
- B.12
- C.18
- D.10
Show answer
Answer: A. 15
3/5 = 9/x, x = 15.
Q2.The fourth proportional to 4, 6, 8 is
- A.9
- B.12
- C.10
- D.14
Show answer
Answer: B. 12
4/6 = 8/x, x = 12.
Q3.The mean proportional between 4 and 9 is
- A.7
- B.13
- C.6
- D.5
Show answer
Answer: C. 6
sqrt(4 x 9) = 6.
Q4.The third proportional to 4 and 6 is
- A.8
- B.10
- C.12
- D.9
Show answer
Answer: D. 9
4 : 6 = 6 : x, x = 9.
Q5.If a : b = 2 : 3 and b : c = 3 : 4, then a : c =
- A.1 : 2
- B.2 : 3
- C.1 : 3
- D.3 : 4
Show answer
Answer: A. 1 : 2
a : c = 2 : 4 = 1 : 2.
Q6.Divide 120 in the ratio 3 : 5. The larger part is
- A.60
- B.75
- C.80
- D.45
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Answer: B. 75
5/8 of 120 = 75.
Q7.If x : 6 = 10 : 15, then x =
- A.9
- B.6
- C.5
- D.4
Show answer
Answer: D. 4
x = 6 x 10 / 15 = 4.
Q8.The ratio 15 : 25 in simplest form is
- A.5 : 3
- B.3 : 5
- C.2 : 3
- D.1 : 2
Show answer
Answer: B. 3 : 5
Divide by 5.
Q9.If 5 pens cost Rs 40, the cost of 8 pens is
- A.Rs 64
- B.Rs 48
- C.Rs 80
- D.Rs 56
Show answer
Answer: A. Rs 64
8 x 8 = 64.
Q10.Two numbers are in the ratio 3 : 4 and their sum is 84. The smaller number is
- A.28
- B.36
- C.32
- D.48
Show answer
Answer: B. 36
3/7 of 84 = 36.
Frequently Asked Questions
Is Proportion Quiz free to attempt on AajExam?
Yes. Proportion Quiz is completely free. You only need a free AajExam account to track your score, view detailed solutions and unlock cross-attempt analytics.
How long does it take to complete Proportion Quiz?
Proportion Quiz runs on a 10-minute timer in real exam-style conditions. The clock starts the moment you click Start, mirroring the time pressure of the actual exam.
Are detailed solutions provided?
Yes. Every question on Proportion Quiz ships with a complete step-by-step solution, the underlying concept, and (where applicable) shortcut tricks. You can also discuss any question with the AajExam community.
Can I attempt Proportion Quiz multiple times?
Yes. You can attempt this quiz as many times as you like. Each attempt is recorded separately so you can track improvement in score, accuracy and time-management.
Which government exams does this quiz prepare me for?
Ratio & Proportion questions appear regularly in SSC CGL, CHSL, MTS, GD; IBPS PO, Clerk; SBI PO, Clerk; RRB NTPC, Group D; UPSC prelims and most State PSC exams. The specific weightage varies by exam — check the exam pattern on the corresponding AajExam exam page for details.