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Finding the Fourth Proportional to 8,363.62, 12,545.45 and 2,820.86

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Solution

The fourth proportional to 8,363.62, 12,545.45 and 2,820.86 is: 4,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,363.62 : 12,545.45 = 2,820.86 : x
  2. Step 2: Convert to fraction form
    8,363.62/12,545.45 = 2,820.86/x
  3. Step 3: Cross multiply
    8,363.62x = 12,545.45 × 2,820.86
  4. Step 4: Simplify right side
    8,363.62x = 35,388,966.51
  5. Step 5: Solve for x
    x = 35,388,966.51/8,363.62
  6. Step 6: Final answer
    x = 4,231.30

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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.