Answer:
We can use the present value formula to calculate the fair value of the bond:
PV = C / (1 + r)^1 + C / (1 + r)^2 + ... + C / (1 + r)^n + FV / (1 + r)^n
where PV is the present value or fair value of the bond, C is the coupon payment, r is the yield to maturity, n is the number of years to maturity, and FV is the face value of the bond.
Plugging in the given values:
Coupon rate = 5%
Face value = K1000
n = 4
At 4% yield to maturity:
r = 4%
PV = 5% x K1000 / (1 + 0.04)^1 + 5% x K1000 / (1 + 0.04)^2 + 5% x K1000 / (1 + 0.04)^3 + 5% x K1000 / (1 + 0.04)^4 + K1000 / (1 + 0.04)^4
PV = K1,066.61
Therefore, the fair value of the bond at 4% yield to maturity is K1,066.61.
At 3% yield to maturity:
r = 3%
PV = 5% x K1000 / (1 + 0.03)^1 + 5% x K1000 / (1 + 0.03)^2 + 5% x K1000 / (1 + 0.03)^3 + 5% x K1000 / (1 + 0.03)^4 + K1000 / (1 + 0.03)^4
PV = K1,093.40
Therefore, the fair value of the bond at 3% yield to maturity is K1,093.40.