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Finding the Third Proportional to 5,280 and 7,446

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Solution

The third proportional to 5,280 and 7,446 is: 10,500.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280 : 7,446 = 7,446 : x
  2. Step 2: Convert to fraction form
    5,280/7,446 = 7,446/x
  3. Step 3: Cross multiply
    5,280x = 7,446 × 7,446
  4. Step 4: Simplify right side
    5,280x = 55,442,916
  5. Step 5: Solve for x
    x = 55,442,916/5,280
  6. Step 6: Final answer
    x = 10,500.55

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.