Home / 5,148.98-7,105.64-2,791.13

Finding the Fourth Proportional to 5,148.98, 7,105.64 and 2,791.13

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Solution

The fourth proportional to 5,148.98, 7,105.64 and 2,791.13 is: 3,851.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.98 : 7,105.64 = 2,791.13 : x
  2. Step 2: Convert to fraction form
    5,148.98/7,105.64 = 2,791.13/x
  3. Step 3: Cross multiply
    5,148.98x = 7,105.64 × 2,791.13
  4. Step 4: Simplify right side
    5,148.98x = 19,832,764.97
  5. Step 5: Solve for x
    x = 19,832,764.97/5,148.98
  6. Step 6: Final answer
    x = 3,851.79

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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.