Question

using the numbers 39,60,12 and 40 form a proportion​

Answer 1

Step-by-step explanation:

we have:

product of extremes=(39× 40)=1560

product of means=. (60×12)=. 720

therefore, product of extremes is not equal to product of means.

hence 39,60,12 and 40 are are not in proportion.