Home / 2,289.54-3,431.82-1,120.33

Finding the Fourth Proportional to 2,289.54, 3,431.82 and 1,120.33

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Solution

The fourth proportional to 2,289.54, 3,431.82 and 1,120.33 is: 1,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.54 : 3,431.82 = 1,120.33 : x
  2. Step 2: Convert to fraction form
    2,289.54/3,431.82 = 1,120.33/x
  3. Step 3: Cross multiply
    2,289.54x = 3,431.82 × 1,120.33
  4. Step 4: Simplify right side
    2,289.54x = 3,844,770.90
  5. Step 5: Solve for x
    x = 3,844,770.90/2,289.54
  6. Step 6: Final answer
    x = 1,679.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.