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Finding the Fourth Proportional to 8,394.20, 12,591.30 and 2,551.10

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Solution

The fourth proportional to 8,394.20, 12,591.30 and 2,551.10 is: 3,826.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.20 : 12,591.30 = 2,551.10 : x
  2. Step 2: Convert to fraction form
    8,394.20/12,591.30 = 2,551.10/x
  3. Step 3: Cross multiply
    8,394.20x = 12,591.30 × 2,551.10
  4. Step 4: Simplify right side
    8,394.20x = 32,121,665.43
  5. Step 5: Solve for x
    x = 32,121,665.43/8,394.20
  6. Step 6: Final answer
    x = 3,826.65

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Similar ratio
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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.