You can do a linear interplation/extrapolation.

Just use the point slope formula for a line.

$m=\dfrac {2.939-2.598}{11.2262-6.6162} \approx 0.074$

$y-y_0 = m(x-x_0)$

$(y-2.939) \approx 0.074(x-11.2262)$

$y\approx 0.074 x +2.1082612$

$\begin{pmatrix}

2.7659 &2.313\\

4.9068 &2.471\\

6.6162 &2.598\\

9.2362 &2.792\\

11.2262 &2.939

\end{pmatrix}$