Home / 5,419.62-8,131.86-4,991.94

Finding the Fourth Proportional to 5,419.62, 8,131.86 and 4,991.94

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Solution

The fourth proportional to 5,419.62, 8,131.86 and 4,991.94 is: 7,490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.62 : 8,131.86 = 4,991.94 : x
  2. Step 2: Convert to fraction form
    5,419.62/8,131.86 = 4,991.94/x
  3. Step 3: Cross multiply
    5,419.62x = 8,131.86 × 4,991.94
  4. Step 4: Simplify right side
    5,419.62x = 40,593,757.21
  5. Step 5: Solve for x
    x = 40,593,757.21/5,419.62
  6. Step 6: Final answer
    x = 7,490.15

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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.