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Finding the Fourth Proportional to 8,394.20, 12,576.90 and 4,002.20

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Solution

The fourth proportional to 8,394.20, 12,576.90 and 4,002.20 is: 5,996.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.20 : 12,576.90 = 4,002.20 : x
  2. Step 2: Convert to fraction form
    8,394.20/12,576.90 = 4,002.20/x
  3. Step 3: Cross multiply
    8,394.20x = 12,576.90 × 4,002.20
  4. Step 4: Simplify right side
    8,394.20x = 50,335,269.18
  5. Step 5: Solve for x
    x = 50,335,269.18/8,394.20
  6. Step 6: Final answer
    x = 5,996.43

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1.5x scale

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.