Home / 2,789.75-4,183.31-1,620.12

Finding the Fourth Proportional to 2,789.75, 4,183.31 and 1,620.12

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Solution

The fourth proportional to 2,789.75, 4,183.31 and 1,620.12 is: 2,429.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.75 : 4,183.31 = 1,620.12 : x
  2. Step 2: Convert to fraction form
    2,789.75/4,183.31 = 1,620.12/x
  3. Step 3: Cross multiply
    2,789.75x = 4,183.31 × 1,620.12
  4. Step 4: Simplify right side
    2,789.75x = 6,777,456.10
  5. Step 5: Solve for x
    x = 6,777,456.10/2,789.75
  6. Step 6: Final answer
    x = 2,429.42

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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.