Home / 7,169.90-10,750.19-2,787.80

Finding the Fourth Proportional to 7,169.90, 10,750.19 and 2,787.80

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Solution

The fourth proportional to 7,169.90, 10,750.19 and 2,787.80 is: 4,179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169.90 : 10,750.19 = 2,787.80 : x
  2. Step 2: Convert to fraction form
    7,169.90/10,750.19 = 2,787.80/x
  3. Step 3: Cross multiply
    7,169.90x = 10,750.19 × 2,787.80
  4. Step 4: Simplify right side
    7,169.90x = 29,969,311.99
  5. Step 5: Solve for x
    x = 29,969,311.99/7,169.90
  6. Step 6: Final answer
    x = 4,179.88

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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.