Home / 8,542.34-12,815.05-3,864.55

Finding the Fourth Proportional to 8,542.34, 12,815.05 and 3,864.55

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Solution

The fourth proportional to 8,542.34, 12,815.05 and 3,864.55 is: 5,797.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,542.34 : 12,815.05 = 3,864.55 : x
  2. Step 2: Convert to fraction form
    8,542.34/12,815.05 = 3,864.55/x
  3. Step 3: Cross multiply
    8,542.34x = 12,815.05 × 3,864.55
  4. Step 4: Simplify right side
    8,542.34x = 49,524,337.40
  5. Step 5: Solve for x
    x = 49,524,337.40/8,542.34
  6. Step 6: Final answer
    x = 5,797.52

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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.