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Finding the Third Proportional to 3,619.25 and 7,930

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Solution

The third proportional to 3,619.25 and 7,930 is: 17,375.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.25 : 7,930 = 7,930 : x
  2. Step 2: Convert to fraction form
    3,619.25/7,930 = 7,930/x
  3. Step 3: Cross multiply
    3,619.25x = 7,930 × 7,930
  4. Step 4: Simplify right side
    3,619.25x = 62,884,900
  5. Step 5: Solve for x
    x = 62,884,900/3,619.25
  6. Step 6: Final answer
    x = 17,375.12

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.