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Finding the Fourth Proportional to 3,591.81, 5,388 and 959.33

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Solution

The fourth proportional to 3,591.81, 5,388 and 959.33 is: 1,439.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591.81 : 5,388 = 959.33 : x
  2. Step 2: Convert to fraction form
    3,591.81/5,388 = 959.33/x
  3. Step 3: Cross multiply
    3,591.81x = 5,388 × 959.33
  4. Step 4: Simplify right side
    3,591.81x = 5,168,843.10
  5. Step 5: Solve for x
    x = 5,168,843.10/3,591.81
  6. Step 6: Final answer
    x = 1,439.06

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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.