Home / 4,120.12-6,180.78-1,198.05

Finding the Fourth Proportional to 4,120.12, 6,180.78 and 1,198.05

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Solution

The fourth proportional to 4,120.12, 6,180.78 and 1,198.05 is: 1,797.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.12 : 6,180.78 = 1,198.05 : x
  2. Step 2: Convert to fraction form
    4,120.12/6,180.78 = 1,198.05/x
  3. Step 3: Cross multiply
    4,120.12x = 6,180.78 × 1,198.05
  4. Step 4: Simplify right side
    4,120.12x = 7,404,883.48
  5. Step 5: Solve for x
    x = 7,404,883.48/4,120.12
  6. Step 6: Final answer
    x = 1,797.25

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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.