Given the list of numbers (1, 2, 3, 6, 8), find the missing value.
1, 2, 3, 6, 8
The missing value is 4.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Given the list of numbers (1, 2, 3, 6, 8), find the missing value.

### Response:
The missing value is 4.