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Finding the Fourth Proportional to 2,960.20, 4,441.20 and 1,660.80

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Solution

The fourth proportional to 2,960.20, 4,441.20 and 1,660.80 is: 2,491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,960.20 : 4,441.20 = 1,660.80 : x
  2. Step 2: Convert to fraction form
    2,960.20/4,441.20 = 1,660.80/x
  3. Step 3: Cross multiply
    2,960.20x = 4,441.20 × 1,660.80
  4. Step 4: Simplify right side
    2,960.20x = 7,375,944.96
  5. Step 5: Solve for x
    x = 7,375,944.96/2,960.20
  6. Step 6: Final answer
    x = 2,491.70

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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.