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Finding the Fourth Proportional to 3,937.11, 5,905.30 and 1,201.11

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Solution

The fourth proportional to 3,937.11, 5,905.30 and 1,201.11 is: 1,801.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.11 : 5,905.30 = 1,201.11 : x
  2. Step 2: Convert to fraction form
    3,937.11/5,905.30 = 1,201.11/x
  3. Step 3: Cross multiply
    3,937.11x = 5,905.30 × 1,201.11
  4. Step 4: Simplify right side
    3,937.11x = 7,092,914.88
  5. Step 5: Solve for x
    x = 7,092,914.88/3,937.11
  6. Step 6: Final answer
    x = 1,801.55

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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.