Home / 2,280.73-3,421.14-819.89

Finding the Fourth Proportional to 2,280.73, 3,421.14 and 819.89

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Solution

The fourth proportional to 2,280.73, 3,421.14 and 819.89 is: 1,229.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.73 : 3,421.14 = 819.89 : x
  2. Step 2: Convert to fraction form
    2,280.73/3,421.14 = 819.89/x
  3. Step 3: Cross multiply
    2,280.73x = 3,421.14 × 819.89
  4. Step 4: Simplify right side
    2,280.73x = 2,804,958.47
  5. Step 5: Solve for x
    x = 2,804,958.47/2,280.73
  6. Step 6: Final answer
    x = 1,229.85

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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.