The fourth proportional to 3.6, 4.2 and

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Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Ratios

Question:

The fourth proportional to 3.6, 4.2 and 5.4 is ?

Options:

1.4

7.2

1.2

6.3

Correct Answer:

6.3

Explanation:

Let the fourth proportional be d.

Proportions a:b = c:d

Therefore, \(\frac{3.6}{4.2}\) = \(\frac{5.4}{d}\)

d = \(\frac{5.4 x 4.2}{3.6}\)

d = 6.3