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Finding the Fourth Proportional to 8,545.13, 12,818.15 and 8,077.66

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Solution

The fourth proportional to 8,545.13, 12,818.15 and 8,077.66 is: 12,116.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.13 : 12,818.15 = 8,077.66 : x
  2. Step 2: Convert to fraction form
    8,545.13/12,818.15 = 8,077.66/x
  3. Step 3: Cross multiply
    8,545.13x = 12,818.15 × 8,077.66
  4. Step 4: Simplify right side
    8,545.13x = 103,540,615.39
  5. Step 5: Solve for x
    x = 103,540,615.39/8,545.13
  6. Step 6: Final answer
    x = 12,116.92

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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.