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Finding the Fourth Proportional to 8,574.33, 12,861.49 and 5,631.36

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Solution

The fourth proportional to 8,574.33, 12,861.49 and 5,631.36 is: 8,447.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.33 : 12,861.49 = 5,631.36 : x
  2. Step 2: Convert to fraction form
    8,574.33/12,861.49 = 5,631.36/x
  3. Step 3: Cross multiply
    8,574.33x = 12,861.49 × 5,631.36
  4. Step 4: Simplify right side
    8,574.33x = 72,427,680.33
  5. Step 5: Solve for x
    x = 72,427,680.33/8,574.33
  6. Step 6: Final answer
    x = 8,447.04

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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.