Home / 3,819.80-5,730.60-1,222.76

Finding the Fourth Proportional to 3,819.80, 5,730.60 and 1,222.76

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Solution

The fourth proportional to 3,819.80, 5,730.60 and 1,222.76 is: 1,834.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.80 : 5,730.60 = 1,222.76 : x
  2. Step 2: Convert to fraction form
    3,819.80/5,730.60 = 1,222.76/x
  3. Step 3: Cross multiply
    3,819.80x = 5,730.60 × 1,222.76
  4. Step 4: Simplify right side
    3,819.80x = 7,007,148.46
  5. Step 5: Solve for x
    x = 7,007,148.46/3,819.80
  6. Step 6: Final answer
    x = 1,834.43

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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.