Home / 3,151.90-4,353.44-2,311.39

Finding the Fourth Proportional to 3,151.90, 4,353.44 and 2,311.39

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Solution

The fourth proportional to 3,151.90, 4,353.44 and 2,311.39 is: 3,192.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.90 : 4,353.44 = 2,311.39 : x
  2. Step 2: Convert to fraction form
    3,151.90/4,353.44 = 2,311.39/x
  3. Step 3: Cross multiply
    3,151.90x = 4,353.44 × 2,311.39
  4. Step 4: Simplify right side
    3,151.90x = 10,062,497.68
  5. Step 5: Solve for x
    x = 10,062,497.68/3,151.90
  6. Step 6: Final answer
    x = 3,192.52

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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.