Finding the Third Proportional to 1,438.70 and 3,130.81
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Solution
The third proportional to 1,438.70 and 3,130.81 is: 6,813.07
Step by Step Solution
- Step 1: Write the proportion equation
1,438.70 : 3,130.81 = 3,130.81 : x - Step 2: Convert to fraction form
1,438.70/3,130.81 = 3,130.81/x - Step 3: Cross multiply
1,438.70x = 3,130.81 × 3,130.81 - Step 4: Simplify right side
1,438.70x = 9,801,947.24 - Step 5: Solve for x
x = 9,801,947.24/1,438.70 - Step 6: Final answer
x = 6,813.07
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These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.