Question 1040385
.
which is a proportion? 
~~~~~~~~~~~~~~~~~~~~~~~~~


<pre>
2/5 = 4/25    This is not

4/6 = 6/9     This is a proportion

4/3 = 6/8     This is not

5/6 = 10/18   This is not
</pre>

On proportions read the lesson <A HREF=https://www.algebra.com/algebra/homework/proportions/lessons/-Proprtions.lesson>Proportions</A> in this site, and also the lessons associated with it.