Value of ring after four years with appreciation of 4 % each year is 4445.46
Solution:
Given that
Tom bought his fiancée Marie a 3800 diamond engagement ring
Marie discovers that the value of the ring appreciates 4% each year
Need to determine value of ring after four years
Initial value of the ring = 3800
Appreciation of 4% in value means 4% increase
After 1 years , value increases by 4% which means
Value after 1 year = Initial value of the ring + 4% of Initial value of the ring

After 2 years, value increases by 4% of Value after 1 year which means
Value after 2 years = Value after 1 year + 4% of Value after 1 year

After 3 years, value increases by 4% of Value after 2 years which means
Value after 3 years = Value after 2 years + 4% of Value after 2 years

After 4 years , value increases by 4% of Value after 1 year which means
Value after 4 years = Value after 3 years + 4% of Value after 3 years

Value of ring after four years with appreciation of 4 % each year is 4445.46