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Finding the Fourth Proportional to 8,099.40, 12,149.12 and 2,908.92

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Solution

The fourth proportional to 8,099.40, 12,149.12 and 2,908.92 is: 4,363.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,099.40 : 12,149.12 = 2,908.92 : x
  2. Step 2: Convert to fraction form
    8,099.40/12,149.12 = 2,908.92/x
  3. Step 3: Cross multiply
    8,099.40x = 12,149.12 × 2,908.92
  4. Step 4: Simplify right side
    8,099.40x = 35,340,818.15
  5. Step 5: Solve for x
    x = 35,340,818.15/8,099.40
  6. Step 6: Final answer
    x = 4,363.39

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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.