1. The problem asks for the 4th and 5th terms of a sequence, but the sequence or formula is not provided. 2. To find specific terms in a sequence, we need the general term formula or the first few terms. 3. For example, if the sequence is arithmetic with first term $a_1$ and common difference $d$, the $n$th term is given by: $$a_n = a_1 + (n-1)d$$ 4. If the sequence is geometric with first term $a_1$ and common ratio $r$, the $n$th term is: $$a_n = a_1 \times r^{n-1}$$ 5. Please provide the sequence or its formula to find the 4th and 5th terms.