Home / 2,519.29-3,778.98-787.96

Finding the Fourth Proportional to 2,519.29, 3,778.98 and 787.96

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Solution

The fourth proportional to 2,519.29, 3,778.98 and 787.96 is: 1,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.29 : 3,778.98 = 787.96 : x
  2. Step 2: Convert to fraction form
    2,519.29/3,778.98 = 787.96/x
  3. Step 3: Cross multiply
    2,519.29x = 3,778.98 × 787.96
  4. Step 4: Simplify right side
    2,519.29x = 2,977,685.08
  5. Step 5: Solve for x
    x = 2,977,685.08/2,519.29
  6. Step 6: Final answer
    x = 1,181.95

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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.