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Finding the Fourth Proportional to 8,574.52, 12,869.70 and 5,294.02

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Solution

The fourth proportional to 8,574.52, 12,869.70 and 5,294.02 is: 7,945.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,574.52 : 12,869.70 = 5,294.02 : x
  2. Step 2: Convert to fraction form
    8,574.52/12,869.70 = 5,294.02/x
  3. Step 3: Cross multiply
    8,574.52x = 12,869.70 × 5,294.02
  4. Step 4: Simplify right side
    8,574.52x = 68,132,449.19
  5. Step 5: Solve for x
    x = 68,132,449.19/8,574.52
  6. Step 6: Final answer
    x = 7,945.92

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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.