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Finding the Fourth Proportional to 3,867.40, 5,337 and 2,099

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Solution

The fourth proportional to 3,867.40, 5,337 and 2,099 is: 2,896.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.40 : 5,337 = 2,099 : x
  2. Step 2: Convert to fraction form
    3,867.40/5,337 = 2,099/x
  3. Step 3: Cross multiply
    3,867.40x = 5,337 × 2,099
  4. Step 4: Simplify right side
    3,867.40x = 11,202,363
  5. Step 5: Solve for x
    x = 11,202,363/3,867.40
  6. Step 6: Final answer
    x = 2,896.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.