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Finding the Third Proportional to 7,909.31 and 9,276.19

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Solution

The third proportional to 7,909.31 and 9,276.19 is: 10,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.31 : 9,276.19 = 9,276.19 : x
  2. Step 2: Convert to fraction form
    7,909.31/9,276.19 = 9,276.19/x
  3. Step 3: Cross multiply
    7,909.31x = 9,276.19 × 9,276.19
  4. Step 4: Simplify right side
    7,909.31x = 86,047,654.54
  5. Step 5: Solve for x
    x = 86,047,654.54/7,909.31
  6. Step 6: Final answer
    x = 10,879.28

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Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.