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Finding the Fourth Proportional to 3,898.65, 5,847.78 and 1,433.29

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Solution

The fourth proportional to 3,898.65, 5,847.78 and 1,433.29 is: 2,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.65 : 5,847.78 = 1,433.29 : x
  2. Step 2: Convert to fraction form
    3,898.65/5,847.78 = 1,433.29/x
  3. Step 3: Cross multiply
    3,898.65x = 5,847.78 × 1,433.29
  4. Step 4: Simplify right side
    3,898.65x = 8,381,582.80
  5. Step 5: Solve for x
    x = 8,381,582.80/3,898.65
  6. Step 6: Final answer
    x = 2,149.87

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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.