- a / b = c / d => ad = bc

=> a = bc / d

=> b = ad / c

- a / c = b / d ; d / b = c / a ; d / c = b / a

a ± b / b = c ± d / d ;

- a + b / a – b = c + d / c – d;

a ± b / a = c ± d / c ;

- a / a ± b = c / c ± d; b / a ± b = d / c ± d

We provide few tricks on Ration and Proportion. Please visit this page to get updates on more Math Shortcut Tricks. You can also like our facebook page to get updates.

If You Have any question regarding this topic then please do comment on below section. You can also send us message on facebook.

We need android app