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Finding the Fourth Proportional to 3,979.37, 5,956.74 and 3,388.88

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Solution

The fourth proportional to 3,979.37, 5,956.74 and 3,388.88 is: 5,072.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.37 : 5,956.74 = 3,388.88 : x
  2. Step 2: Convert to fraction form
    3,979.37/5,956.74 = 3,388.88/x
  3. Step 3: Cross multiply
    3,979.37x = 5,956.74 × 3,388.88
  4. Step 4: Simplify right side
    3,979.37x = 20,186,691.94
  5. Step 5: Solve for x
    x = 20,186,691.94/3,979.37
  6. Step 6: Final answer
    x = 5,072.83

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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.