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Finding the Fourth Proportional to 8,137.32, 12,216.06 and 8,099.88

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Solution

The fourth proportional to 8,137.32, 12,216.06 and 8,099.88 is: 12,159.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.32 : 12,216.06 = 8,099.88 : x
  2. Step 2: Convert to fraction form
    8,137.32/12,216.06 = 8,099.88/x
  3. Step 3: Cross multiply
    8,137.32x = 12,216.06 × 8,099.88
  4. Step 4: Simplify right side
    8,137.32x = 98,948,620.07
  5. Step 5: Solve for x
    x = 98,948,620.07/8,137.32
  6. Step 6: Final answer
    x = 12,159.85

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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.