Home / 2,136.38-3,204.23-819.42

Finding the Fourth Proportional to 2,136.38, 3,204.23 and 819.42

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Solution

The fourth proportional to 2,136.38, 3,204.23 and 819.42 is: 1,228.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.38 : 3,204.23 = 819.42 : x
  2. Step 2: Convert to fraction form
    2,136.38/3,204.23 = 819.42/x
  3. Step 3: Cross multiply
    2,136.38x = 3,204.23 × 819.42
  4. Step 4: Simplify right side
    2,136.38x = 2,625,594.03
  5. Step 5: Solve for x
    x = 2,625,594.03/2,136.38
  6. Step 6: Final answer
    x = 1,228.99

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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.