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Finding the Fourth Proportional to 3,936.37, 5,905.37 and 3,291.61

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Solution

The fourth proportional to 3,936.37, 5,905.37 and 3,291.61 is: 4,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.37 : 5,905.37 = 3,291.61 : x
  2. Step 2: Convert to fraction form
    3,936.37/5,905.37 = 3,291.61/x
  3. Step 3: Cross multiply
    3,936.37x = 5,905.37 × 3,291.61
  4. Step 4: Simplify right side
    3,936.37x = 19,438,174.95
  5. Step 5: Solve for x
    x = 19,438,174.95/3,936.37
  6. Step 6: Final answer
    x = 4,938.10

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1.5x scale

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.