One thing I find strange is that there are four black people along with four white people. Usually reality shows have only two African American contestants. So let's check who is associated with the number four besides Tracey shall we?
Keshia: Born in April, the fourth month.
Stephen: Aren't there four Baldwin Brothers? He's the fourth.
Corbin: Four kids.
Dennis: Four kids and four alligators.
Angie: Four dogs.
Mark: Interesting that he lists five hobbies, five places, and five music choices in his profile. No mention of the number four.
Ananda: Four Hobbies.
Those are all listed in the profiles, so they were meant to be seen, and it's always possible that they were asked to say something with the number four in it.