Home / 1,989.33-2,745.14-1,105.10

Finding the Fourth Proportional to 1,989.33, 2,745.14 and 1,105.10

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Solution

The fourth proportional to 1,989.33, 2,745.14 and 1,105.10 is: 1,524.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.33 : 2,745.14 = 1,105.10 : x
  2. Step 2: Convert to fraction form
    1,989.33/2,745.14 = 1,105.10/x
  3. Step 3: Cross multiply
    1,989.33x = 2,745.14 × 1,105.10
  4. Step 4: Simplify right side
    1,989.33x = 3,033,634.96
  5. Step 5: Solve for x
    x = 3,033,634.96/1,989.33
  6. Step 6: Final answer
    x = 1,524.95

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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.