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Finding the Fourth Proportional to 8,545.70, 12,820.95 and 4,163.30

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Solution

The fourth proportional to 8,545.70, 12,820.95 and 4,163.30 is: 6,246.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.70 : 12,820.95 = 4,163.30 : x
  2. Step 2: Convert to fraction form
    8,545.70/12,820.95 = 4,163.30/x
  3. Step 3: Cross multiply
    8,545.70x = 12,820.95 × 4,163.30
  4. Step 4: Simplify right side
    8,545.70x = 53,377,461.14
  5. Step 5: Solve for x
    x = 53,377,461.14/8,545.70
  6. Step 6: Final answer
    x = 6,246.12

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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.