Question

State True(T) or False(F):

$5.2:3.9::3:4$

Answer 1

If the ratio of first to the second is equal to ratio to third to the fourth, these will be in proportion.
$5.2:3.9=\frac{5.2}{3.9}$

$=\frac{(1.3\times 4)}{(1.3\times 3)}$

$=\frac{4}{3}$

$=4:3$

Since $4:3$ is not equal to $3:4$, they are not in proportion.

So the given statement is false.