Home / 3,229.62-4,845.78-2,190.78

Finding the Fourth Proportional to 3,229.62, 4,845.78 and 2,190.78

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Solution

The fourth proportional to 3,229.62, 4,845.78 and 2,190.78 is: 3,287.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229.62 : 4,845.78 = 2,190.78 : x
  2. Step 2: Convert to fraction form
    3,229.62/4,845.78 = 2,190.78/x
  3. Step 3: Cross multiply
    3,229.62x = 4,845.78 × 2,190.78
  4. Step 4: Simplify right side
    3,229.62x = 10,616,037.91
  5. Step 5: Solve for x
    x = 10,616,037.91/3,229.62
  6. Step 6: Final answer
    x = 3,287.09

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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.