Home / 6,218.28-8,581.20-3,423.78

Finding the Fourth Proportional to 6,218.28, 8,581.20 and 3,423.78

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Solution

The fourth proportional to 6,218.28, 8,581.20 and 3,423.78 is: 4,724.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,218.28 : 8,581.20 = 3,423.78 : x
  2. Step 2: Convert to fraction form
    6,218.28/8,581.20 = 3,423.78/x
  3. Step 3: Cross multiply
    6,218.28x = 8,581.20 × 3,423.78
  4. Step 4: Simplify right side
    6,218.28x = 29,380,140.94
  5. Step 5: Solve for x
    x = 29,380,140.94/6,218.28
  6. Step 6: Final answer
    x = 4,724.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.