Tolong saya please!!!!!!!

dik :
p.pesawat = 36 m → 3.600 cm
p.sayap = 48 m → 4.800 cm
p.pesawat ( model ) = 63 cm
p.sayap ( model ) = ?

63/ 3600 = x / 4800
3600 x = 63 × 4800
x = 302.400/3600
x = 84 cm