What fractions are not equivalent and equivalent to one third

1/3=2/6=3/9=4/12
1/3 is not equivalent to 1/4 or 3/8 or 2/5
*there are more examples these are just some

2/6 is equivalent, 4/12. But that's just two. All you need to do is multiply by 2 or 3 or basically any number really. BUT NOT THE NUMBERS THAT WILL GIVE YOU BIG NUMBERS LIKE 16/48, I mean it is equivalent but that wouldn't be correct just try to go in order.