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Finding the Fourth Proportional to 3,906.18, 5,850.03 and 3,390.39

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Solution

The fourth proportional to 3,906.18, 5,850.03 and 3,390.39 is: 5,077.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.18 : 5,850.03 = 3,390.39 : x
  2. Step 2: Convert to fraction form
    3,906.18/5,850.03 = 3,390.39/x
  3. Step 3: Cross multiply
    3,906.18x = 5,850.03 × 3,390.39
  4. Step 4: Simplify right side
    3,906.18x = 19,833,883.21
  5. Step 5: Solve for x
    x = 19,833,883.21/3,906.18
  6. Step 6: Final answer
    x = 5,077.57

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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.