Home / 3,198.67-4,415.64-2,255.23

Finding the Fourth Proportional to 3,198.67, 4,415.64 and 2,255.23

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Solution

The fourth proportional to 3,198.67, 4,415.64 and 2,255.23 is: 3,113.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.67 : 4,415.64 = 2,255.23 : x
  2. Step 2: Convert to fraction form
    3,198.67/4,415.64 = 2,255.23/x
  3. Step 3: Cross multiply
    3,198.67x = 4,415.64 × 2,255.23
  4. Step 4: Simplify right side
    3,198.67x = 9,958,261.72
  5. Step 5: Solve for x
    x = 9,958,261.72/3,198.67
  6. Step 6: Final answer
    x = 3,113.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.