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Finding the Fourth Proportional to 8,394.87, 12,591.49 and 2,551.53

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Solution

The fourth proportional to 8,394.87, 12,591.49 and 2,551.53 is: 3,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.87 : 12,591.49 = 2,551.53 : x
  2. Step 2: Convert to fraction form
    8,394.87/12,591.49 = 2,551.53/x
  3. Step 3: Cross multiply
    8,394.87x = 12,591.49 × 2,551.53
  4. Step 4: Simplify right side
    8,394.87x = 32,127,558.10
  5. Step 5: Solve for x
    x = 32,127,558.10/8,394.87
  6. Step 6: Final answer
    x = 3,827.05

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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.