Home / 1,912.44-2,639.73-1,249.39

Finding the Fourth Proportional to 1,912.44, 2,639.73 and 1,249.39

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Solution

The fourth proportional to 1,912.44, 2,639.73 and 1,249.39 is: 1,724.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.44 : 2,639.73 = 1,249.39 : x
  2. Step 2: Convert to fraction form
    1,912.44/2,639.73 = 1,249.39/x
  3. Step 3: Cross multiply
    1,912.44x = 2,639.73 × 1,249.39
  4. Step 4: Simplify right side
    1,912.44x = 3,298,052.26
  5. Step 5: Solve for x
    x = 3,298,052.26/1,912.44
  6. Step 6: Final answer
    x = 1,724.53

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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.