Home / 2,585.98-3,879.45-1,198.40

Finding the Fourth Proportional to 2,585.98, 3,879.45 and 1,198.40

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Solution

The fourth proportional to 2,585.98, 3,879.45 and 1,198.40 is: 1,797.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.98 : 3,879.45 = 1,198.40 : x
  2. Step 2: Convert to fraction form
    2,585.98/3,879.45 = 1,198.40/x
  3. Step 3: Cross multiply
    2,585.98x = 3,879.45 × 1,198.40
  4. Step 4: Simplify right side
    2,585.98x = 4,649,132.88
  5. Step 5: Solve for x
    x = 4,649,132.88/2,585.98
  6. Step 6: Final answer
    x = 1,797.82

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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.