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Finding the Fourth Proportional to 8,117.80, 12,105.43 and 8,043.88

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Solution

The fourth proportional to 8,117.80, 12,105.43 and 8,043.88 is: 11,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.80 : 12,105.43 = 8,043.88 : x
  2. Step 2: Convert to fraction form
    8,117.80/12,105.43 = 8,043.88/x
  3. Step 3: Cross multiply
    8,117.80x = 12,105.43 × 8,043.88
  4. Step 4: Simplify right side
    8,117.80x = 97,374,626.27
  5. Step 5: Solve for x
    x = 97,374,626.27/8,117.80
  6. Step 6: Final answer
    x = 11,995.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.