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Finding the Fourth Proportional to 8,752.64, 13,129.20 and 2,829.78

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Solution

The fourth proportional to 8,752.64, 13,129.20 and 2,829.78 is: 4,244.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752.64 : 13,129.20 = 2,829.78 : x
  2. Step 2: Convert to fraction form
    8,752.64/13,129.20 = 2,829.78/x
  3. Step 3: Cross multiply
    8,752.64x = 13,129.20 × 2,829.78
  4. Step 4: Simplify right side
    8,752.64x = 37,152,747.58
  5. Step 5: Solve for x
    x = 37,152,747.58/8,752.64
  6. Step 6: Final answer
    x = 4,244.75

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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.