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Finding the Fourth Proportional to 8,807.28, 13,212 and 4,124.88

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Solution

The fourth proportional to 8,807.28, 13,212 and 4,124.88 is: 6,187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.28 : 13,212 = 4,124.88 : x
  2. Step 2: Convert to fraction form
    8,807.28/13,212 = 4,124.88/x
  3. Step 3: Cross multiply
    8,807.28x = 13,212 × 4,124.88
  4. Step 4: Simplify right side
    8,807.28x = 54,497,914.56
  5. Step 5: Solve for x
    x = 54,497,914.56/8,807.28
  6. Step 6: Final answer
    x = 6,187.83

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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.