Finding the Third Proportional to 7,858.13 and 11,787.19
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Solution
The third proportional to 7,858.13 and 11,787.19 is: 17,680.78
Step by Step Solution
- Step 1: Write the proportion equation
7,858.13 : 11,787.19 = 11,787.19 : x - Step 2: Convert to fraction form
7,858.13/11,787.19 = 11,787.19/x - Step 3: Cross multiply
7,858.13x = 11,787.19 × 11,787.19 - Step 4: Simplify right side
7,858.13x = 138,937,789.16 - Step 5: Solve for x
x = 138,937,789.16/7,858.13 - Step 6: Final answer
x = 17,680.78
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.