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Finding the Fourth Proportional to 2,229.86, 3,345.46 and 843.62

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Solution

The fourth proportional to 2,229.86, 3,345.46 and 843.62 is: 1,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.86 : 3,345.46 = 843.62 : x
  2. Step 2: Convert to fraction form
    2,229.86/3,345.46 = 843.62/x
  3. Step 3: Cross multiply
    2,229.86x = 3,345.46 × 843.62
  4. Step 4: Simplify right side
    2,229.86x = 2,822,289.91
  5. Step 5: Solve for x
    x = 2,822,289.91/2,229.86
  6. Step 6: Final answer
    x = 1,265.68

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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.