Home / 3,910.12-5,396.42-2,231.77

Finding the Fourth Proportional to 3,910.12, 5,396.42 and 2,231.77

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Solution

The fourth proportional to 3,910.12, 5,396.42 and 2,231.77 is: 3,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.12 : 5,396.42 = 2,231.77 : x
  2. Step 2: Convert to fraction form
    3,910.12/5,396.42 = 2,231.77/x
  3. Step 3: Cross multiply
    3,910.12x = 5,396.42 × 2,231.77
  4. Step 4: Simplify right side
    3,910.12x = 12,043,581.85
  5. Step 5: Solve for x
    x = 12,043,581.85/3,910.12
  6. Step 6: Final answer
    x = 3,080.10

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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.