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Finding the Fourth Proportional to 3,826.92, 5,740.92 and 1,230.42

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Solution

The fourth proportional to 3,826.92, 5,740.92 and 1,230.42 is: 1,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.92 : 5,740.92 = 1,230.42 : x
  2. Step 2: Convert to fraction form
    3,826.92/5,740.92 = 1,230.42/x
  3. Step 3: Cross multiply
    3,826.92x = 5,740.92 × 1,230.42
  4. Step 4: Simplify right side
    3,826.92x = 7,063,742.79
  5. Step 5: Solve for x
    x = 7,063,742.79/3,826.92
  6. Step 6: Final answer
    x = 1,845.80

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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.