Home / 4,131.66-6,198.77-1,320.91

Finding the Fourth Proportional to 4,131.66, 6,198.77 and 1,320.91

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Solution

The fourth proportional to 4,131.66, 6,198.77 and 1,320.91 is: 1,981.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,131.66 : 6,198.77 = 1,320.91 : x
  2. Step 2: Convert to fraction form
    4,131.66/6,198.77 = 1,320.91/x
  3. Step 3: Cross multiply
    4,131.66x = 6,198.77 × 1,320.91
  4. Step 4: Simplify right side
    4,131.66x = 8,188,010.68
  5. Step 5: Solve for x
    x = 8,188,010.68/4,131.66
  6. Step 6: Final answer
    x = 1,981.78

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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.