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Finding the Fourth Proportional to 8,585.76, 12,879.72 and 3,037.80

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Solution

The fourth proportional to 8,585.76, 12,879.72 and 3,037.80 is: 4,557.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.76 : 12,879.72 = 3,037.80 : x
  2. Step 2: Convert to fraction form
    8,585.76/12,879.72 = 3,037.80/x
  3. Step 3: Cross multiply
    8,585.76x = 12,879.72 × 3,037.80
  4. Step 4: Simplify right side
    8,585.76x = 39,126,013.42
  5. Step 5: Solve for x
    x = 39,126,013.42/8,585.76
  6. Step 6: Final answer
    x = 4,557.08

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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.