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Finding the Fourth Proportional to 3,866.98, 5,800.36 and 2,679.86

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Solution

The fourth proportional to 3,866.98, 5,800.36 and 2,679.86 is: 4,019.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.98 : 5,800.36 = 2,679.86 : x
  2. Step 2: Convert to fraction form
    3,866.98/5,800.36 = 2,679.86/x
  3. Step 3: Cross multiply
    3,866.98x = 5,800.36 × 2,679.86
  4. Step 4: Simplify right side
    3,866.98x = 15,544,123.75
  5. Step 5: Solve for x
    x = 15,544,123.75/3,866.98
  6. Step 6: Final answer
    x = 4,019.71

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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.