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Finding the Fourth Proportional to 3,308.75, 4,963.11 and 2,578.87

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Solution

The fourth proportional to 3,308.75, 4,963.11 and 2,578.87 is: 3,868.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,308.75 : 4,963.11 = 2,578.87 : x
  2. Step 2: Convert to fraction form
    3,308.75/4,963.11 = 2,578.87/x
  3. Step 3: Cross multiply
    3,308.75x = 4,963.11 × 2,578.87
  4. Step 4: Simplify right side
    3,308.75x = 12,799,190.67
  5. Step 5: Solve for x
    x = 12,799,190.67/3,308.75
  6. Step 6: Final answer
    x = 3,868.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.