Home / 4,120.22-5,685.88-2,231.77

Finding the Fourth Proportional to 4,120.22, 5,685.88 and 2,231.77

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Solution

The fourth proportional to 4,120.22, 5,685.88 and 2,231.77 is: 3,079.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.22 : 5,685.88 = 2,231.77 : x
  2. Step 2: Convert to fraction form
    4,120.22/5,685.88 = 2,231.77/x
  3. Step 3: Cross multiply
    4,120.22x = 5,685.88 × 2,231.77
  4. Step 4: Simplify right side
    4,120.22x = 12,689,565.25
  5. Step 5: Solve for x
    x = 12,689,565.25/4,120.22
  6. Step 6: Final answer
    x = 3,079.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.