Home / 3,910.80-5,396.58-2,231.94

Finding the Fourth Proportional to 3,910.80, 5,396.58 and 2,231.94

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Solution

The fourth proportional to 3,910.80, 5,396.58 and 2,231.94 is: 3,079.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.80 : 5,396.58 = 2,231.94 : x
  2. Step 2: Convert to fraction form
    3,910.80/5,396.58 = 2,231.94/x
  3. Step 3: Cross multiply
    3,910.80x = 5,396.58 × 2,231.94
  4. Step 4: Simplify right side
    3,910.80x = 12,044,842.77
  5. Step 5: Solve for x
    x = 12,044,842.77/3,910.80
  6. Step 6: Final answer
    x = 3,079.89

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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.