Home / 5,149.09-7,105.62-2,791.25

Finding the Fourth Proportional to 5,149.09, 7,105.62 and 2,791.25

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Solution

The fourth proportional to 5,149.09, 7,105.62 and 2,791.25 is: 3,851.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.09 : 7,105.62 = 2,791.25 : x
  2. Step 2: Convert to fraction form
    5,149.09/7,105.62 = 2,791.25/x
  3. Step 3: Cross multiply
    5,149.09x = 7,105.62 × 2,791.25
  4. Step 4: Simplify right side
    5,149.09x = 19,833,561.83
  5. Step 5: Solve for x
    x = 19,833,561.83/5,149.09
  6. Step 6: Final answer
    x = 3,851.86

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1.5x scale

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.