Home / 8,581.20-12,872.40-3,650.28

Finding the Fourth Proportional to 8,581.20, 12,872.40 and 3,650.28

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Solution

The fourth proportional to 8,581.20, 12,872.40 and 3,650.28 is: 5,475.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.20 : 12,872.40 = 3,650.28 : x
  2. Step 2: Convert to fraction form
    8,581.20/12,872.40 = 3,650.28/x
  3. Step 3: Cross multiply
    8,581.20x = 12,872.40 × 3,650.28
  4. Step 4: Simplify right side
    8,581.20x = 46,987,864.27
  5. Step 5: Solve for x
    x = 46,987,864.27/8,581.20
  6. Step 6: Final answer
    x = 5,475.68

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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.