Question

If 2:x and x:32 are in proportion, the value of x is

• A. 8
• B. 14
• C. 7

Answer 1

The correct option is A 8

Given: 2, x, x, 32 are in proportion i.e. 2:x :: x:32
$\Rightarrow \frac{2}{x}=\frac{x}{32}$
$\Rightarrow x\times x=2\times 32$
$\Rightarrow x\times x=64$
$\Rightarrow x\times x=8\times 8$
$\Rightarrow x=8$