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Finding the Fourth Proportional to 3,877.52, 5,807.02 and 2,119.90

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Solution

The fourth proportional to 3,877.52, 5,807.02 and 2,119.90 is: 3,174.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.52 : 5,807.02 = 2,119.90 : x
  2. Step 2: Convert to fraction form
    3,877.52/5,807.02 = 2,119.90/x
  3. Step 3: Cross multiply
    3,877.52x = 5,807.02 × 2,119.90
  4. Step 4: Simplify right side
    3,877.52x = 12,310,274.45
  5. Step 5: Solve for x
    x = 12,310,274.45/3,877.52
  6. Step 6: Final answer
    x = 3,174.78

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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.