It could, just possibly, be one tenth!
3/10 of an inch
It is 3/10.
It is 1/3.
3 10th
3 Tenths the fraction is written like this 3 over 10 and in decimal form like this.3
There is not sufficient information to answer this question. You have not specified what it will be a fraction of. Do you require 1.37 inches as a fraction of an inch, a foot, a mile?
3/16
One - tenth.
One tenth (1/10) !
1/10
As a fraction it is 3/16 of an inch