Question

Show that the numbers 25, 36, 5, 6 are not in proportion.

Answer 1

Product of the extremes = 25 $\times$ 6 = 150
Product of the means = 36 $\times$ 5 = 180

The product of the extremes is not equal to that of the means.

Hence, 25, 36, 5 and 6 are not in proportion.