Home / 2,589.33-3,881.29-1,128.09

Finding the Fourth Proportional to 2,589.33, 3,881.29 and 1,128.09

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Solution

The fourth proportional to 2,589.33, 3,881.29 and 1,128.09 is: 1,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.33 : 3,881.29 = 1,128.09 : x
  2. Step 2: Convert to fraction form
    2,589.33/3,881.29 = 1,128.09/x
  3. Step 3: Cross multiply
    2,589.33x = 3,881.29 × 1,128.09
  4. Step 4: Simplify right side
    2,589.33x = 4,378,444.44
  5. Step 5: Solve for x
    x = 4,378,444.44/2,589.33
  6. Step 6: Final answer
    x = 1,690.96

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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.