Answer :

[tex]\frac{x}{z}=\frac{6}{5}\ \ \ \ |cross\ multiply\\\\5x=6z\ \ \ \ \ |divide\ both\ sides\ by\ 5\\\\x=\frac{6z}{5}\ \ \ \ \ |divide\ both\ sides\ by\ 6\\\\\boxed{\frac{x}{6}=\frac{z}{5}}[/tex]