Home / 1,989.24-2,745.30-1,105.26

Finding the Fourth Proportional to 1,989.24, 2,745.30 and 1,105.26

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Solution

The fourth proportional to 1,989.24, 2,745.30 and 1,105.26 is: 1,525.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.24 : 2,745.30 = 1,105.26 : x
  2. Step 2: Convert to fraction form
    1,989.24/2,745.30 = 1,105.26/x
  3. Step 3: Cross multiply
    1,989.24x = 2,745.30 × 1,105.26
  4. Step 4: Simplify right side
    1,989.24x = 3,034,270.28
  5. Step 5: Solve for x
    x = 3,034,270.28/1,989.24
  6. Step 6: Final answer
    x = 1,525.34

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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.