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Finding the Fourth Proportional to 3,847.64, 5,766.06 and 1,654.72

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Solution

The fourth proportional to 3,847.64, 5,766.06 and 1,654.72 is: 2,479.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.64 : 5,766.06 = 1,654.72 : x
  2. Step 2: Convert to fraction form
    3,847.64/5,766.06 = 1,654.72/x
  3. Step 3: Cross multiply
    3,847.64x = 5,766.06 × 1,654.72
  4. Step 4: Simplify right side
    3,847.64x = 9,541,214.80
  5. Step 5: Solve for x
    x = 9,541,214.80/3,847.64
  6. Step 6: Final answer
    x = 2,479.76

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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.