Final answer:
Calculating the value of the loan amount at the end of period 3 requires additional information such as the interest rate and payment amounts, which are not provided in the question.
Step-by-step explanation:
The question relates to loan amortization, specifically calculating the value of the amount at the end of a given period when making payments every four months over a four-year period. The example calculations related to loans of different amounts and terms provided in the question were to illustrate various scenarios of loan repayment. To directly answer the initial question, more information such as the interest rate and the payment amounts would be necessary. Without these details, the exact value at the end of period 3 cannot be determined.