Home / 5,190.28-7,788.76-2,069.75

Finding the Fourth Proportional to 5,190.28, 7,788.76 and 2,069.75

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Solution

The fourth proportional to 5,190.28, 7,788.76 and 2,069.75 is: 3,105.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.28 : 7,788.76 = 2,069.75 : x
  2. Step 2: Convert to fraction form
    5,190.28/7,788.76 = 2,069.75/x
  3. Step 3: Cross multiply
    5,190.28x = 7,788.76 × 2,069.75
  4. Step 4: Simplify right side
    5,190.28x = 16,120,800.31
  5. Step 5: Solve for x
    x = 16,120,800.31/5,190.28
  6. Step 6: Final answer
    x = 3,105.96

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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.