5,000 SAR is a common mid-level salary in Saudi Arabia. For a family of 4, the dependent levy alone is 1,200 SAR/month. Rent for a 2-bedroom in Riyadh or Jeddah is 2,500-4,000 SAR. That leaves very little for food, school, and savings.
Employer-provided accommodation is the make-or-break factor. With it, 5,000 SAR works for a small family. Without it, the math is extremely tight and you may run a monthly deficit.