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Finding the Third Proportional to 5,109 and 7,487.25

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Solution

The third proportional to 5,109 and 7,487.25 is: 10,972.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109 : 7,487.25 = 7,487.25 : x
  2. Step 2: Convert to fraction form
    5,109/7,487.25 = 7,487.25/x
  3. Step 3: Cross multiply
    5,109x = 7,487.25 × 7,487.25
  4. Step 4: Simplify right side
    5,109x = 56,058,912.56
  5. Step 5: Solve for x
    x = 56,058,912.56/5,109
  6. Step 6: Final answer
    x = 10,972.58

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.