Home / 3,179.86-4,761.57-2,195.71

Finding the Fourth Proportional to 3,179.86, 4,761.57 and 2,195.71

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Solution

The fourth proportional to 3,179.86, 4,761.57 and 2,195.71 is: 3,287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.86 : 4,761.57 = 2,195.71 : x
  2. Step 2: Convert to fraction form
    3,179.86/4,761.57 = 2,195.71/x
  3. Step 3: Cross multiply
    3,179.86x = 4,761.57 × 2,195.71
  4. Step 4: Simplify right side
    3,179.86x = 10,455,026.86
  5. Step 5: Solve for x
    x = 10,455,026.86/3,179.86
  6. Step 6: Final answer
    x = 3,287.89

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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.