Home / 5,177.62-7,145.18-2,819.76

Finding the Fourth Proportional to 5,177.62, 7,145.18 and 2,819.76

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Solution

The fourth proportional to 5,177.62, 7,145.18 and 2,819.76 is: 3,891.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.62 : 7,145.18 = 2,819.76 : x
  2. Step 2: Convert to fraction form
    5,177.62/7,145.18 = 2,819.76/x
  3. Step 3: Cross multiply
    5,177.62x = 7,145.18 × 2,819.76
  4. Step 4: Simplify right side
    5,177.62x = 20,147,692.76
  5. Step 5: Solve for x
    x = 20,147,692.76/5,177.62
  6. Step 6: Final answer
    x = 3,891.30

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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.