Home / 1,989.26-2,744.99-1,149.90

Finding the Fourth Proportional to 1,989.26, 2,744.99 and 1,149.90

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Solution

The fourth proportional to 1,989.26, 2,744.99 and 1,149.90 is: 1,586.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.26 : 2,744.99 = 1,149.90 : x
  2. Step 2: Convert to fraction form
    1,989.26/2,744.99 = 1,149.90/x
  3. Step 3: Cross multiply
    1,989.26x = 2,744.99 × 1,149.90
  4. Step 4: Simplify right side
    1,989.26x = 3,156,452.27
  5. Step 5: Solve for x
    x = 3,156,452.27/1,989.26
  6. Step 6: Final answer
    x = 1,586.75

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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.