Home / 3,011.05-4,516.91-819.80

Finding the Fourth Proportional to 3,011.05, 4,516.91 and 819.80

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Solution

The fourth proportional to 3,011.05, 4,516.91 and 819.80 is: 1,229.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.05 : 4,516.91 = 819.80 : x
  2. Step 2: Convert to fraction form
    3,011.05/4,516.91 = 819.80/x
  3. Step 3: Cross multiply
    3,011.05x = 4,516.91 × 819.80
  4. Step 4: Simplify right side
    3,011.05x = 3,702,942.28
  5. Step 5: Solve for x
    x = 3,702,942.28/3,011.05
  6. Step 6: Final answer
    x = 1,229.79

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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.