Home / 4,112.60-6,129.80-3,879.07

Finding the Fourth Proportional to 4,112.60, 6,129.80 and 3,879.07

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Solution

The fourth proportional to 4,112.60, 6,129.80 and 3,879.07 is: 5,781.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.60 : 6,129.80 = 3,879.07 : x
  2. Step 2: Convert to fraction form
    4,112.60/6,129.80 = 3,879.07/x
  3. Step 3: Cross multiply
    4,112.60x = 6,129.80 × 3,879.07
  4. Step 4: Simplify right side
    4,112.60x = 23,777,923.29
  5. Step 5: Solve for x
    x = 23,777,923.29/4,112.60
  6. Step 6: Final answer
    x = 5,781.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.