Home / 2,280.15-3,420.23-819.42

Finding the Fourth Proportional to 2,280.15, 3,420.23 and 819.42

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Solution

The fourth proportional to 2,280.15, 3,420.23 and 819.42 is: 1,229.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.15 : 3,420.23 = 819.42 : x
  2. Step 2: Convert to fraction form
    2,280.15/3,420.23 = 819.42/x
  3. Step 3: Cross multiply
    2,280.15x = 3,420.23 × 819.42
  4. Step 4: Simplify right side
    2,280.15x = 2,802,587.94
  5. Step 5: Solve for x
    x = 2,802,587.94/2,280.15
  6. Step 6: Final answer
    x = 1,229.12

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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.