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Finding the Fourth Proportional to 8,789.82, 12,117.32 and 6,267.55

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Solution

The fourth proportional to 8,789.82, 12,117.32 and 6,267.55 is: 8,640.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.82 : 12,117.32 = 6,267.55 : x
  2. Step 2: Convert to fraction form
    8,789.82/12,117.32 = 6,267.55/x
  3. Step 3: Cross multiply
    8,789.82x = 12,117.32 × 6,267.55
  4. Step 4: Simplify right side
    8,789.82x = 75,945,908.97
  5. Step 5: Solve for x
    x = 75,945,908.97/8,789.82
  6. Step 6: Final answer
    x = 8,640.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.