Home / 5,228.20-7,842.84-2,765.80

Finding the Fourth Proportional to 5,228.20, 7,842.84 and 2,765.80

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Solution

The fourth proportional to 5,228.20, 7,842.84 and 2,765.80 is: 4,148.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.20 : 7,842.84 = 2,765.80 : x
  2. Step 2: Convert to fraction form
    5,228.20/7,842.84 = 2,765.80/x
  3. Step 3: Cross multiply
    5,228.20x = 7,842.84 × 2,765.80
  4. Step 4: Simplify right side
    5,228.20x = 21,691,726.87
  5. Step 5: Solve for x
    x = 21,691,726.87/5,228.20
  6. Step 6: Final answer
    x = 4,148.99

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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.