Home / 2,791.26-3,851.28-2,680.56

Finding the Fourth Proportional to 2,791.26, 3,851.28 and 2,680.56

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Solution

The fourth proportional to 2,791.26, 3,851.28 and 2,680.56 is: 3,698.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.26 : 3,851.28 = 2,680.56 : x
  2. Step 2: Convert to fraction form
    2,791.26/3,851.28 = 2,680.56/x
  3. Step 3: Cross multiply
    2,791.26x = 3,851.28 × 2,680.56
  4. Step 4: Simplify right side
    2,791.26x = 10,323,587.12
  5. Step 5: Solve for x
    x = 10,323,587.12/2,791.26
  6. Step 6: Final answer
    x = 3,698.54

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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.