Home / 5,149.09-7,105.74-2,791.23

Finding the Fourth Proportional to 5,149.09, 7,105.74 and 2,791.23

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Solution

The fourth proportional to 5,149.09, 7,105.74 and 2,791.23 is: 3,851.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.09 : 7,105.74 = 2,791.23 : x
  2. Step 2: Convert to fraction form
    5,149.09/7,105.74 = 2,791.23/x
  3. Step 3: Cross multiply
    5,149.09x = 7,105.74 × 2,791.23
  4. Step 4: Simplify right side
    5,149.09x = 19,833,754.66
  5. Step 5: Solve for x
    x = 19,833,754.66/5,149.09
  6. Step 6: Final answer
    x = 3,851.90

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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.