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Finding the Third Proportional to 3,997.50 and 6,386.25

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Solution

The third proportional to 3,997.50 and 6,386.25 is: 10,202.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.50 : 6,386.25 = 6,386.25 : x
  2. Step 2: Convert to fraction form
    3,997.50/6,386.25 = 6,386.25/x
  3. Step 3: Cross multiply
    3,997.50x = 6,386.25 × 6,386.25
  4. Step 4: Simplify right side
    3,997.50x = 40,784,189.06
  5. Step 5: Solve for x
    x = 40,784,189.06/3,997.50
  6. Step 6: Final answer
    x = 10,202.42

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.