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Finding the Third Proportional to 4,470 and 7,217

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Solution

The third proportional to 4,470 and 7,217 is: 11,652.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,470 : 7,217 = 7,217 : x
  2. Step 2: Convert to fraction form
    4,470/7,217 = 7,217/x
  3. Step 3: Cross multiply
    4,470x = 7,217 × 7,217
  4. Step 4: Simplify right side
    4,470x = 52,085,089
  5. Step 5: Solve for x
    x = 52,085,089/4,470
  6. Step 6: Final answer
    x = 11,652.15

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.