Question

find the fourth proportional to the following quantities
3/2,7/2,13/4​

Answer 1

Step-by-step explanation:

a:b=c:d Here d is the fourth proportional

We know that a×d=b×c

=> d = bc/a

Given in the Question :

3/2:7/2=13/4:d

4th proportion or d = 7/2×13/4/3/2

= 91/8/3/2

= 91/12

So the 4th proportional is 91/12

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