Question

3:11::1:?
Find x?
Options are 1)21 2)29 3)18 4)51

Answer 1

Here is your answer

$\frac{3}{11} = \frac{1}{x} \\ 3 \times x = 1 \times 11 \\ x = \frac{11}{3}$
Hope it helps you

Answer 2

3:11::1:x

Product of extremes = Product of means

3x = 11*1

3x = 11

x = 11/3

Hope it helps :)