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Finding the Fourth Proportional to 8,366.91, 12,551.43 and 2,819.09

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Solution

The fourth proportional to 8,366.91, 12,551.43 and 2,819.09 is: 4,228.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,366.91 : 12,551.43 = 2,819.09 : x
  2. Step 2: Convert to fraction form
    8,366.91/12,551.43 = 2,819.09/x
  3. Step 3: Cross multiply
    8,366.91x = 12,551.43 × 2,819.09
  4. Step 4: Simplify right side
    8,366.91x = 35,383,610.80
  5. Step 5: Solve for x
    x = 35,383,610.80/8,366.91
  6. Step 6: Final answer
    x = 4,228.99

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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.