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Finding the Fourth Proportional to 3,195.78, 4,793.18 and 855.94

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Solution

The fourth proportional to 3,195.78, 4,793.18 and 855.94 is: 1,283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,195.78 : 4,793.18 = 855.94 : x
  2. Step 2: Convert to fraction form
    3,195.78/4,793.18 = 855.94/x
  3. Step 3: Cross multiply
    3,195.78x = 4,793.18 × 855.94
  4. Step 4: Simplify right side
    3,195.78x = 4,102,674.49
  5. Step 5: Solve for x
    x = 4,102,674.49/3,195.78
  6. Step 6: Final answer
    x = 1,283.78

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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.