Home / 5,177.20-7,144.70-2,819.42

Finding the Fourth Proportional to 5,177.20, 7,144.70 and 2,819.42

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Solution

The fourth proportional to 5,177.20, 7,144.70 and 2,819.42 is: 3,890.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.20 : 7,144.70 = 2,819.42 : x
  2. Step 2: Convert to fraction form
    5,177.20/7,144.70 = 2,819.42/x
  3. Step 3: Cross multiply
    5,177.20x = 7,144.70 × 2,819.42
  4. Step 4: Simplify right side
    5,177.20x = 20,143,910.07
  5. Step 5: Solve for x
    x = 20,143,910.07/5,177.20
  6. Step 6: Final answer
    x = 3,890.89

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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.