Home / 1,989.40-2,745.19-1,104.97

Finding the Fourth Proportional to 1,989.40, 2,745.19 and 1,104.97

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Solution

The fourth proportional to 1,989.40, 2,745.19 and 1,104.97 is: 1,524.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.40 : 2,745.19 = 1,104.97 : x
  2. Step 2: Convert to fraction form
    1,989.40/2,745.19 = 1,104.97/x
  3. Step 3: Cross multiply
    1,989.40x = 2,745.19 × 1,104.97
  4. Step 4: Simplify right side
    1,989.40x = 3,033,352.59
  5. Step 5: Solve for x
    x = 3,033,352.59/1,989.40
  6. Step 6: Final answer
    x = 1,524.76

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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.