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Finding the Third Proportional to 3,930.50 and 4,484

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Solution

The third proportional to 3,930.50 and 4,484 is: 5,115.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.50 : 4,484 = 4,484 : x
  2. Step 2: Convert to fraction form
    3,930.50/4,484 = 4,484/x
  3. Step 3: Cross multiply
    3,930.50x = 4,484 × 4,484
  4. Step 4: Simplify right side
    3,930.50x = 20,106,256
  5. Step 5: Solve for x
    x = 20,106,256/3,930.50
  6. Step 6: Final answer
    x = 5,115.44

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.