Home / 2,789.90-4,184.85-1,249.82

Finding the Fourth Proportional to 2,789.90, 4,184.85 and 1,249.82

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Solution

The fourth proportional to 2,789.90, 4,184.85 and 1,249.82 is: 1,874.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.90 : 4,184.85 = 1,249.82 : x
  2. Step 2: Convert to fraction form
    2,789.90/4,184.85 = 1,249.82/x
  3. Step 3: Cross multiply
    2,789.90x = 4,184.85 × 1,249.82
  4. Step 4: Simplify right side
    2,789.90x = 5,230,309.23
  5. Step 5: Solve for x
    x = 5,230,309.23/2,789.90
  6. Step 6: Final answer
    x = 1,874.73

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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.