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C : R : (F − 32) : (K − 273) : (Ra - 491) = 100 : 80 : 180 : 100 : 180

Contoh

Sebuah benda memiliki suhu 60°C. Tentukan suhu benda pada skala:

(A)   Reamur

(B)   Fahrenheit

(C)   Kelvin

(A)   Reamur

\begin{equation*} \begin{split} & \frac{60 - 0}{x - 0} = \frac{100 - 0}{80 - 0} \\\\ & \frac{60}{x} = \frac{\cancelto {5} {100}}{\cancelto {4} {80}} \\\\ & \frac {60}{x} = \frac {5}{4} \\\\ & 5 \:.\: x = 60 \:.\: 4 \\\\ & 5 \:.\: x = 240 \\\\ & \bbox[5px, border: 2px solid magenta] {x = 48^{\text{o}} \text{ R}} \end{split} \end{equation*}

(B)   Fahrenheit

\begin{equation*} \begin{split} & \frac{60 - 0}{x - 32} = \frac{100 - 0}{212 - 32} \\\\ & \frac{60}{x - 32} = \frac{\cancelto {5} {100}}{\cancelto {9} {180}} \\\\ & \frac {60}{x - 32} = \frac 59 \\\\ & \cancelto {1} {5} \:.\: (x - 32) = \cancelto {12} {60} \:.\: 9 \\\\ & x - 32 = 12 \:.\: 9 \\\\ & x - 32 = 108 \\\\ & \bbox[5px, border: 2px solid magenta] {x = 140^{\text{o}} \text{ F}} \end{split} \end{equation*}

(C)   Kelvin

\begin{equation*} \begin{split} & \text{K} = \text{C} + 273 \\\\ & \text{K} = 60 + 273 \\\\ & \text{K} = \bbox[5px, border: 2px solid magenta] {333 \text{ K}} \end{split} \end{equation*}