Question

Find the value of x in the following proportions :
x : 26 :: 5: 65

Answer 1

$x:26::5:65$
Product of the means = Product of the extremes
$$\begin{array}{cc}26\times 5& =x\times 65\\ \frac{26\times 5}{65}& =x\\ \frac{26}{13}& =x\\ x& =2\end{array}$$