Home / 2,489.18-3,734.58-1,190.75

Finding the Fourth Proportional to 2,489.18, 3,734.58 and 1,190.75

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Solution

The fourth proportional to 2,489.18, 3,734.58 and 1,190.75 is: 1,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.18 : 3,734.58 = 1,190.75 : x
  2. Step 2: Convert to fraction form
    2,489.18/3,734.58 = 1,190.75/x
  3. Step 3: Cross multiply
    2,489.18x = 3,734.58 × 1,190.75
  4. Step 4: Simplify right side
    2,489.18x = 4,446,951.14
  5. Step 5: Solve for x
    x = 4,446,951.14/2,489.18
  6. Step 6: Final answer
    x = 1,786.51

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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.