Question

Check whether the following numbers are in proportion or not

1)1/5,⅛,¼,1/10

Answer 1

If the question is
1/5 : 1/8 :: 1/4 : 1/10

(1/5) / (1/8)=8/5

(1/4) / (1/10)=10/4=5/2

Since 8/5 not equal to 5/2,
These are not in proportion.

If the question is
1/5 : 1/10 :: 1/4 : 1/8
then,

(1/5)/(1/10) =10/5=2/1

(1/4)/(1/8) =8/4=2/1

Since ( 2/1) equal to (2/1),
they are in proportion