Average rate on 30-year mortgage falls to 4 pct.

WASHINGTON (AP) — The average rate on the 30-year fixed mortgage fell to 4 percent this week, nearly matching the all-time low hit just one month ago.

Freddie Mac said Thursday the rate on the 30-year loan dropped from 4.10 percent last week. Four weeks ago, it dropped to 3.94 percent — the lowest rate ever, according to the National Bureau of Economic Research.

The average rate on the 15-year fixed mortgage fell to 3.31 percent from 3.38 percent. Four weeks ago, it too hit a record low of 3.26 percent.

Mortgage rates tend to track the yield on the 10-year Treasury note. They yield fell this week after investors shifted money out of stocks and into the safety of …