Hi there!
There's probably a million different ways you can represent three-fourths but I wouldn't be able to fit them all here. I'll give you a few so you know what you're working with.
3/4 = 0.75
3/4 = 75%
3/4 = 6/8
-> Notice that there's infinite ways to write this as a fraction but three fourths itself cannot be simplified lower than what it is.
3/4 = 12/16
3/4 = 24/32
3/4 = 48/64
The list goes on and on. But no matter what it will always be 3/4, no matter what way you write it.
Hope this helps!