Home / 3,198.20-4,796.75-858.45

Finding the Fourth Proportional to 3,198.20, 4,796.75 and 858.45

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Solution

The fourth proportional to 3,198.20, 4,796.75 and 858.45 is: 1,287.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.20 : 4,796.75 = 858.45 : x
  2. Step 2: Convert to fraction form
    3,198.20/4,796.75 = 858.45/x
  3. Step 3: Cross multiply
    3,198.20x = 4,796.75 × 858.45
  4. Step 4: Simplify right side
    3,198.20x = 4,117,772.18
  5. Step 5: Solve for x
    x = 4,117,772.18/3,198.20
  6. Step 6: Final answer
    x = 1,287.53

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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.