Home / 3,183.40-4,778.70-2,456.20

Finding the Fourth Proportional to 3,183.40, 4,778.70 and 2,456.20

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Solution

The fourth proportional to 3,183.40, 4,778.70 and 2,456.20 is: 3,687.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.40 : 4,778.70 = 2,456.20 : x
  2. Step 2: Convert to fraction form
    3,183.40/4,778.70 = 2,456.20/x
  3. Step 3: Cross multiply
    3,183.40x = 4,778.70 × 2,456.20
  4. Step 4: Simplify right side
    3,183.40x = 11,737,442.94
  5. Step 5: Solve for x
    x = 11,737,442.94/3,183.40
  6. Step 6: Final answer
    x = 3,687.08

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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.