Home / 1,249.42-1,863.53-1,227.55

Finding the Fourth Proportional to 1,249.42, 1,863.53 and 1,227.55

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Solution

The fourth proportional to 1,249.42, 1,863.53 and 1,227.55 is: 1,830.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.42 : 1,863.53 = 1,227.55 : x
  2. Step 2: Convert to fraction form
    1,249.42/1,863.53 = 1,227.55/x
  3. Step 3: Cross multiply
    1,249.42x = 1,863.53 × 1,227.55
  4. Step 4: Simplify right side
    1,249.42x = 2,287,576.25
  5. Step 5: Solve for x
    x = 2,287,576.25/1,249.42
  6. Step 6: Final answer
    x = 1,830.91

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1.5x scale

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.