Costa Rica is 4.4 times larger than Qatar.
Area: 51,100 km2 World Factbook
Population: 4,755,234 (July 2014) World Factbook
Costa Rica, officially the Republic of Costa Rica, is a country in Central America, bordered by Nicaragua to the north, Panama to the southeast, the Pacific Ocean to the west, the Caribbean Sea to the east, and Ecuador to the south of Cocos Island. Wikipedia
Area: 11,586 km2 World Factbook
Population: 2,123,160 (July 2014) World Factbook
Qatar, officially the State of Qatar, is a sovereign Arab country, located in Western Asia, occupying the small Qatar Peninsula on the northeasterly coast of the Arabian Peninsula. Its sole land border is with Saudi Arabia to the south, with the rest of its territory surrounded by the Persian Gulf. Wikipedia