Home / 1,989.39-2,745.28-1,150.33

Finding the Fourth Proportional to 1,989.39, 2,745.28 and 1,150.33

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Solution

The fourth proportional to 1,989.39, 2,745.28 and 1,150.33 is: 1,587.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.39 : 2,745.28 = 1,150.33 : x
  2. Step 2: Convert to fraction form
    1,989.39/2,745.28 = 1,150.33/x
  3. Step 3: Cross multiply
    1,989.39x = 2,745.28 × 1,150.33
  4. Step 4: Simplify right side
    1,989.39x = 3,157,972.19
  5. Step 5: Solve for x
    x = 3,157,972.19/1,989.39
  6. Step 6: Final answer
    x = 1,587.41

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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.