Home / 5,169.88-7,134.28-2,811.96

Finding the Fourth Proportional to 5,169.88, 7,134.28 and 2,811.96

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Solution

The fourth proportional to 5,169.88, 7,134.28 and 2,811.96 is: 3,880.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.88 : 7,134.28 = 2,811.96 : x
  2. Step 2: Convert to fraction form
    5,169.88/7,134.28 = 2,811.96/x
  3. Step 3: Cross multiply
    5,169.88x = 7,134.28 × 2,811.96
  4. Step 4: Simplify right side
    5,169.88x = 20,061,309.99
  5. Step 5: Solve for x
    x = 20,061,309.99/5,169.88
  6. Step 6: Final answer
    x = 3,880.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.