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Finding the Fourth Proportional to 8,544.84, 12,819.80 and 4,387.78

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Solution

The fourth proportional to 8,544.84, 12,819.80 and 4,387.78 is: 6,582.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,544.84 : 12,819.80 = 4,387.78 : x
  2. Step 2: Convert to fraction form
    8,544.84/12,819.80 = 4,387.78/x
  3. Step 3: Cross multiply
    8,544.84x = 12,819.80 × 4,387.78
  4. Step 4: Simplify right side
    8,544.84x = 56,250,462.04
  5. Step 5: Solve for x
    x = 56,250,462.04/8,544.84
  6. Step 6: Final answer
    x = 6,582.97

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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.