Home / 5,147.28-7,722.90-2,028.78

Finding the Fourth Proportional to 5,147.28, 7,722.90 and 2,028.78

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Solution

The fourth proportional to 5,147.28, 7,722.90 and 2,028.78 is: 3,043.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.28 : 7,722.90 = 2,028.78 : x
  2. Step 2: Convert to fraction form
    5,147.28/7,722.90 = 2,028.78/x
  3. Step 3: Cross multiply
    5,147.28x = 7,722.90 × 2,028.78
  4. Step 4: Simplify right side
    5,147.28x = 15,668,065.06
  5. Step 5: Solve for x
    x = 15,668,065.06/5,147.28
  6. Step 6: Final answer
    x = 3,043.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.