To find the value of 1.5 in fraction, follow three steps:

Write it in the form of a simple fraction ie. 1.5/1.

Multiply both numerator and denominator by 10 for every number after the decimal point ie. 1.5*10/1*10 that gives 15/10.

Now, reduce the above fraction by dividing it by its multiples or common factor which in the end will give 3/2.

So the value of 1.5 in fraction is 3/2.