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Finding the Third Proportional to 5,415.75 and 7,243.97

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Solution

The third proportional to 5,415.75 and 7,243.97 is: 9,689.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.75 : 7,243.97 = 7,243.97 : x
  2. Step 2: Convert to fraction form
    5,415.75/7,243.97 = 7,243.97/x
  3. Step 3: Cross multiply
    5,415.75x = 7,243.97 × 7,243.97
  4. Step 4: Simplify right side
    5,415.75x = 52,475,083.25
  5. Step 5: Solve for x
    x = 52,475,083.25/5,415.75
  6. Step 6: Final answer
    x = 9,689.35

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.