Ranking

This shouldn't be hard but I am stuck. I am running a query that adds the number of rows a person has added to three different tables. What I want to do with that query is determine where that total is in relation to all other users that have added rows. So lets say I've added 1 row to each table and I total 3 rows. That ranks me #3 out of 10 total users.

How would I end up with that ranking? I've gotten as far as the totalling part.