Home / 5,149.90-7,738.62-2,811.52

Finding the Fourth Proportional to 5,149.90, 7,738.62 and 2,811.52

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Solution

The fourth proportional to 5,149.90, 7,738.62 and 2,811.52 is: 4,224.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.90 : 7,738.62 = 2,811.52 : x
  2. Step 2: Convert to fraction form
    5,149.90/7,738.62 = 2,811.52/x
  3. Step 3: Cross multiply
    5,149.90x = 7,738.62 × 2,811.52
  4. Step 4: Simplify right side
    5,149.90x = 21,757,284.90
  5. Step 5: Solve for x
    x = 21,757,284.90/5,149.90
  6. Step 6: Final answer
    x = 4,224.80

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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.