1. The problem statement, all variables and given/known data 2. Relevant equations a/b=c/d 3. The attempt at a solution I started out with transitivity and I figure it's transitive because a/b=e/f = af=be=(a,b)R(e,f). It can't be symmetric because ad does not equal bc, 1*4 does not equal 2*3 I'm I correct or completely wrong?