Rhode Island is about 1.9 times smaller than Delaware.

Delaware is approximately 5,060 sq km, while Rhode Island is approximately 2,706 sq km, making Rhode Island 53.48% the size of Delaware. Meanwhile, the population of Delaware is ~897,934 people (154,633 more people live in Rhode Island).
Tip: This to-scale comparison of Delaware vs. Rhode Island uses the Mercator projection, which distorts the size of regions near the poles.