Home / 4,077.60-6,118.92-2,131.20

Finding the Fourth Proportional to 4,077.60, 6,118.92 and 2,131.20

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Solution

The fourth proportional to 4,077.60, 6,118.92 and 2,131.20 is: 3,198.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,077.60 : 6,118.92 = 2,131.20 : x
  2. Step 2: Convert to fraction form
    4,077.60/6,118.92 = 2,131.20/x
  3. Step 3: Cross multiply
    4,077.60x = 6,118.92 × 2,131.20
  4. Step 4: Simplify right side
    4,077.60x = 13,040,642.30
  5. Step 5: Solve for x
    x = 13,040,642.30/4,077.60
  6. Step 6: Final answer
    x = 3,198.12

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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.