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Finding the Fourth Proportional to 5,591.88, 8,390.64 and 3,958.92

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Solution

The fourth proportional to 5,591.88, 8,390.64 and 3,958.92 is: 5,940.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,591.88 : 8,390.64 = 3,958.92 : x
  2. Step 2: Convert to fraction form
    5,591.88/8,390.64 = 3,958.92/x
  3. Step 3: Cross multiply
    5,591.88x = 8,390.64 × 3,958.92
  4. Step 4: Simplify right side
    5,591.88x = 33,217,872.51
  5. Step 5: Solve for x
    x = 33,217,872.51/5,591.88
  6. Step 6: Final answer
    x = 5,940.38

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1.5x scale

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.