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Finding the Fourth Proportional to 8,118.62, 12,163.86 and 7,924.88

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Solution

The fourth proportional to 8,118.62, 12,163.86 and 7,924.88 is: 11,873.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.62 : 12,163.86 = 7,924.88 : x
  2. Step 2: Convert to fraction form
    8,118.62/12,163.86 = 7,924.88/x
  3. Step 3: Cross multiply
    8,118.62x = 12,163.86 × 7,924.88
  4. Step 4: Simplify right side
    8,118.62x = 96,397,130.84
  5. Step 5: Solve for x
    x = 96,397,130.84/8,118.62
  6. Step 6: Final answer
    x = 11,873.59

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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.