Home / 3,911.22-5,396.10-2,231.41

Finding the Fourth Proportional to 3,911.22, 5,396.10 and 2,231.41

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Solution

The fourth proportional to 3,911.22, 5,396.10 and 2,231.41 is: 3,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.22 : 5,396.10 = 2,231.41 : x
  2. Step 2: Convert to fraction form
    3,911.22/5,396.10 = 2,231.41/x
  3. Step 3: Cross multiply
    3,911.22x = 5,396.10 × 2,231.41
  4. Step 4: Simplify right side
    3,911.22x = 12,040,911.50
  5. Step 5: Solve for x
    x = 12,040,911.50/3,911.22
  6. Step 6: Final answer
    x = 3,078.56

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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.