Home / 5,177.62-7,145.14-2,819.76

Finding the Fourth Proportional to 5,177.62, 7,145.14 and 2,819.76

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Solution

The fourth proportional to 5,177.62, 7,145.14 and 2,819.76 is: 3,891.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.62 : 7,145.14 = 2,819.76 : x
  2. Step 2: Convert to fraction form
    5,177.62/7,145.14 = 2,819.76/x
  3. Step 3: Cross multiply
    5,177.62x = 7,145.14 × 2,819.76
  4. Step 4: Simplify right side
    5,177.62x = 20,147,579.97
  5. Step 5: Solve for x
    x = 20,147,579.97/5,177.62
  6. Step 6: Final answer
    x = 3,891.28

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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.