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Finding the Fourth Proportional to 8,363.88, 12,543.66 and 3,166.92

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Solution

The fourth proportional to 8,363.88, 12,543.66 and 3,166.92 is: 4,749.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,363.88 : 12,543.66 = 3,166.92 : x
  2. Step 2: Convert to fraction form
    8,363.88/12,543.66 = 3,166.92/x
  3. Step 3: Cross multiply
    8,363.88x = 12,543.66 × 3,166.92
  4. Step 4: Simplify right side
    8,363.88x = 39,724,767.73
  5. Step 5: Solve for x
    x = 39,724,767.73/8,363.88
  6. Step 6: Final answer
    x = 4,749.56

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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.