Home / 5,177.20-7,144.30-2,819.20

Finding the Fourth Proportional to 5,177.20, 7,144.30 and 2,819.20

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Solution

The fourth proportional to 5,177.20, 7,144.30 and 2,819.20 is: 3,890.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.20 : 7,144.30 = 2,819.20 : x
  2. Step 2: Convert to fraction form
    5,177.20/7,144.30 = 2,819.20/x
  3. Step 3: Cross multiply
    5,177.20x = 7,144.30 × 2,819.20
  4. Step 4: Simplify right side
    5,177.20x = 20,141,210.56
  5. Step 5: Solve for x
    x = 20,141,210.56/5,177.20
  6. Step 6: Final answer
    x = 3,890.37

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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.