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Finding the Fourth Proportional to 8,666.60, 12,974.38 and 5,369.09

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Solution

The fourth proportional to 8,666.60, 12,974.38 and 5,369.09 is: 8,037.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.60 : 12,974.38 = 5,369.09 : x
  2. Step 2: Convert to fraction form
    8,666.60/12,974.38 = 5,369.09/x
  3. Step 3: Cross multiply
    8,666.60x = 12,974.38 × 5,369.09
  4. Step 4: Simplify right side
    8,666.60x = 69,660,535.62
  5. Step 5: Solve for x
    x = 69,660,535.62/8,666.60
  6. Step 6: Final answer
    x = 8,037.82

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1.5x scale

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.