Home / 5,177.72-7,145.27-2,819.88

Finding the Fourth Proportional to 5,177.72, 7,145.27 and 2,819.88

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Solution

The fourth proportional to 5,177.72, 7,145.27 and 2,819.88 is: 3,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.72 : 7,145.27 = 2,819.88 : x
  2. Step 2: Convert to fraction form
    5,177.72/7,145.27 = 2,819.88/x
  3. Step 3: Cross multiply
    5,177.72x = 7,145.27 × 2,819.88
  4. Step 4: Simplify right side
    5,177.72x = 20,148,811.02
  5. Step 5: Solve for x
    x = 20,148,811.02/5,177.72
  6. Step 6: Final answer
    x = 3,891.44

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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.