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Finding the Third Proportional to 4,728 and 7,329

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Solution

The third proportional to 4,728 and 7,329 is: 11,360.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,728 : 7,329 = 7,329 : x
  2. Step 2: Convert to fraction form
    4,728/7,329 = 7,329/x
  3. Step 3: Cross multiply
    4,728x = 7,329 × 7,329
  4. Step 4: Simplify right side
    4,728x = 53,714,241
  5. Step 5: Solve for x
    x = 53,714,241/4,728
  6. Step 6: Final answer
    x = 11,360.88

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.