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Finding the Third Proportional to 1,042.88 and 2,839.22

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Solution

The third proportional to 1,042.88 and 2,839.22 is: 7,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.88 : 2,839.22 = 2,839.22 : x
  2. Step 2: Convert to fraction form
    1,042.88/2,839.22 = 2,839.22/x
  3. Step 3: Cross multiply
    1,042.88x = 2,839.22 × 2,839.22
  4. Step 4: Simplify right side
    1,042.88x = 8,061,163.11
  5. Step 5: Solve for x
    x = 8,061,163.11/1,042.88
  6. Step 6: Final answer
    x = 7,729.75

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Why These Related Problems?

These problems maintain the same ratio (2.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.