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Finding the Third Proportional to 7,115 and 9,952

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Solution

The third proportional to 7,115 and 9,952 is: 13,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115 : 9,952 = 9,952 : x
  2. Step 2: Convert to fraction form
    7,115/9,952 = 9,952/x
  3. Step 3: Cross multiply
    7,115x = 9,952 × 9,952
  4. Step 4: Simplify right side
    7,115x = 99,042,304
  5. Step 5: Solve for x
    x = 99,042,304/7,115
  6. Step 6: Final answer
    x = 13,920.21

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.