Home / 1,241.28-1,854.60-1,198.20

Finding the Fourth Proportional to 1,241.28, 1,854.60 and 1,198.20

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Solution

The fourth proportional to 1,241.28, 1,854.60 and 1,198.20 is: 1,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.28 : 1,854.60 = 1,198.20 : x
  2. Step 2: Convert to fraction form
    1,241.28/1,854.60 = 1,198.20/x
  3. Step 3: Cross multiply
    1,241.28x = 1,854.60 × 1,198.20
  4. Step 4: Simplify right side
    1,241.28x = 2,222,181.72
  5. Step 5: Solve for x
    x = 2,222,181.72/1,241.28
  6. Step 6: Final answer
    x = 1,790.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.