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Finding the Fourth Proportional to 3,936.74, 5,905.42 and 1,304.14

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Solution

The fourth proportional to 3,936.74, 5,905.42 and 1,304.14 is: 1,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.74 : 5,905.42 = 1,304.14 : x
  2. Step 2: Convert to fraction form
    3,936.74/5,905.42 = 1,304.14/x
  3. Step 3: Cross multiply
    3,936.74x = 5,905.42 × 1,304.14
  4. Step 4: Simplify right side
    3,936.74x = 7,701,481.02
  5. Step 5: Solve for x
    x = 7,701,481.02/3,936.74
  6. Step 6: Final answer
    x = 1,956.31

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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.