Home / 2,879.40-4,319.12-1,234.56

Finding the Fourth Proportional to 2,879.40, 4,319.12 and 1,234.56

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Solution

The fourth proportional to 2,879.40, 4,319.12 and 1,234.56 is: 1,851.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.40 : 4,319.12 = 1,234.56 : x
  2. Step 2: Convert to fraction form
    2,879.40/4,319.12 = 1,234.56/x
  3. Step 3: Cross multiply
    2,879.40x = 4,319.12 × 1,234.56
  4. Step 4: Simplify right side
    2,879.40x = 5,332,212.79
  5. Step 5: Solve for x
    x = 5,332,212.79/2,879.40
  6. Step 6: Final answer
    x = 1,851.85

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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.