Question

4. (i) First, second and third terms of a proportion are respectively, 4, 6 and 8. Find its fourth term. (ii) First, second and fourth terms of a proportion are respectively 5.2, 3.9 and 3. Find its third term.​

Answer 1

Answer:

(i)Fourth term is 12 (ii)third term is 4

Step-by-step explanation:

(i) First ,second and third term of a proportion are 4,6 ,8

Let fourth term be X

As we know that ,

Product of first and fourth term =product of second and third term

4*X=6*8

X=48/4

X=12

(ii)First ,second ,fourth terms are 5.2,3.9,3

Let third term be X

Product of first and fourth term = product of second and third term

∴5.2*3=3.9*X

⇒15.6=3.9X

⇒X=15.6/3.9

⇒X=4