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Finding the Fourth Proportional to 3,970.62, 5,956.02 and 1,660.86

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Solution

The fourth proportional to 3,970.62, 5,956.02 and 1,660.86 is: 2,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.62 : 5,956.02 = 1,660.86 : x
  2. Step 2: Convert to fraction form
    3,970.62/5,956.02 = 1,660.86/x
  3. Step 3: Cross multiply
    3,970.62x = 5,956.02 × 1,660.86
  4. Step 4: Simplify right side
    3,970.62x = 9,892,115.38
  5. Step 5: Solve for x
    x = 9,892,115.38/3,970.62
  6. Step 6: Final answer
    x = 2,491.33

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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.