Rhode Island is about 3.8 times bigger than Singapore.

Singapore is approximately 719 sq km, while Rhode Island is approximately 2,706 sq km, making Rhode Island 276% larger than Singapore. Meanwhile, the population of Singapore is ~5.9 million people (4.9 million fewer people live in Rhode Island).
Tip: This to-scale comparison of Singapore vs. Rhode Island uses the Mercator projection, which distorts the size of regions near the poles.