Home / 3,789.64-5,677.17-2,812.78

Finding the Fourth Proportional to 3,789.64, 5,677.17 and 2,812.78

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Solution

The fourth proportional to 3,789.64, 5,677.17 and 2,812.78 is: 4,213.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.64 : 5,677.17 = 2,812.78 : x
  2. Step 2: Convert to fraction form
    3,789.64/5,677.17 = 2,812.78/x
  3. Step 3: Cross multiply
    3,789.64x = 5,677.17 × 2,812.78
  4. Step 4: Simplify right side
    3,789.64x = 15,968,630.23
  5. Step 5: Solve for x
    x = 15,968,630.23/3,789.64
  6. Step 6: Final answer
    x = 4,213.76

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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.