Fort Wayne, Indiana is 2.6 times larger than South Bend, Indiana.
Area: 287 km2 calculated
Fort Wayne is a city in the U.S. state of Indiana and the county seat of Allen County. The population was 256,496 as of the 2013 Census estimate making it the 76th largest city in the United States and the second largest in Indiana after Indianapolis. Wikipedia
Area: 109 km2 calculated
The city of South Bend is the county seat of St. Joseph County, Indiana, United States, on the St. Joseph River near its southernmost bend, from which it derives its name. Wikipedia