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Finding the Fourth Proportional to 8,545.76, 12,819.92 and 2,999.76

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Solution

The fourth proportional to 8,545.76, 12,819.92 and 2,999.76 is: 4,500.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.76 : 12,819.92 = 2,999.76 : x
  2. Step 2: Convert to fraction form
    8,545.76/12,819.92 = 2,999.76/x
  3. Step 3: Cross multiply
    8,545.76x = 12,819.92 × 2,999.76
  4. Step 4: Simplify right side
    8,545.76x = 38,456,683.22
  5. Step 5: Solve for x
    x = 38,456,683.22/8,545.76
  6. Step 6: Final answer
    x = 4,500.09

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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.