Home / 1,989.21-2,745.09-1,104.99

Finding the Fourth Proportional to 1,989.21, 2,745.09 and 1,104.99

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Solution

The fourth proportional to 1,989.21, 2,745.09 and 1,104.99 is: 1,524.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.21 : 2,745.09 = 1,104.99 : x
  2. Step 2: Convert to fraction form
    1,989.21/2,745.09 = 1,104.99/x
  3. Step 3: Cross multiply
    1,989.21x = 2,745.09 × 1,104.99
  4. Step 4: Simplify right side
    1,989.21x = 3,033,302.15
  5. Step 5: Solve for x
    x = 3,033,302.15/1,989.21
  6. Step 6: Final answer
    x = 1,524.88

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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.