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Finding the Third Proportional to 7,930.13 and 8,628.75

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Solution

The third proportional to 7,930.13 and 8,628.75 is: 9,388.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,930.13 : 8,628.75 = 8,628.75 : x
  2. Step 2: Convert to fraction form
    7,930.13/8,628.75 = 8,628.75/x
  3. Step 3: Cross multiply
    7,930.13x = 8,628.75 × 8,628.75
  4. Step 4: Simplify right side
    7,930.13x = 74,455,326.56
  5. Step 5: Solve for x
    x = 74,455,326.56/7,930.13
  6. Step 6: Final answer
    x = 9,388.92

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.