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Finding the Fourth Proportional to 3,591, 5,388.53 and 1,399.45

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Solution

The fourth proportional to 3,591, 5,388.53 and 1,399.45 is: 2,099.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,591 : 5,388.53 = 1,399.45 : x
  2. Step 2: Convert to fraction form
    3,591/5,388.53 = 1,399.45/x
  3. Step 3: Cross multiply
    3,591x = 5,388.53 × 1,399.45
  4. Step 4: Simplify right side
    3,591x = 7,540,978.31
  5. Step 5: Solve for x
    x = 7,540,978.31/3,591
  6. Step 6: Final answer
    x = 2,099.97

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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.