Home / 3,099.22-4,273.31-2,311.90

Finding the Fourth Proportional to 3,099.22, 4,273.31 and 2,311.90

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Solution

The fourth proportional to 3,099.22, 4,273.31 and 2,311.90 is: 3,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.22 : 4,273.31 = 2,311.90 : x
  2. Step 2: Convert to fraction form
    3,099.22/4,273.31 = 2,311.90/x
  3. Step 3: Cross multiply
    3,099.22x = 4,273.31 × 2,311.90
  4. Step 4: Simplify right side
    3,099.22x = 9,879,443.15
  5. Step 5: Solve for x
    x = 9,879,443.15/3,099.22
  6. Step 6: Final answer
    x = 3,187.72

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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.