Home / 3,478.16-5,217.33-2,789.21

Finding the Fourth Proportional to 3,478.16, 5,217.33 and 2,789.21

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Solution

The fourth proportional to 3,478.16, 5,217.33 and 2,789.21 is: 4,183.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.16 : 5,217.33 = 2,789.21 : x
  2. Step 2: Convert to fraction form
    3,478.16/5,217.33 = 2,789.21/x
  3. Step 3: Cross multiply
    3,478.16x = 5,217.33 × 2,789.21
  4. Step 4: Simplify right side
    3,478.16x = 14,552,229.01
  5. Step 5: Solve for x
    x = 14,552,229.01/3,478.16
  6. Step 6: Final answer
    x = 4,183.89

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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.