Home / 1,257.18-1,873.32-1,198.26

Finding the Fourth Proportional to 1,257.18, 1,873.32 and 1,198.26

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Solution

The fourth proportional to 1,257.18, 1,873.32 and 1,198.26 is: 1,785.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.18 : 1,873.32 = 1,198.26 : x
  2. Step 2: Convert to fraction form
    1,257.18/1,873.32 = 1,198.26/x
  3. Step 3: Cross multiply
    1,257.18x = 1,873.32 × 1,198.26
  4. Step 4: Simplify right side
    1,257.18x = 2,244,724.42
  5. Step 5: Solve for x
    x = 2,244,724.42/1,257.18
  6. Step 6: Final answer
    x = 1,785.52

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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.