Home / 2,791.68-3,851.29-1,729.17

Finding the Fourth Proportional to 2,791.68, 3,851.29 and 1,729.17

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Solution

The fourth proportional to 2,791.68, 3,851.29 and 1,729.17 is: 2,385.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.68 : 3,851.29 = 1,729.17 : x
  2. Step 2: Convert to fraction form
    2,791.68/3,851.29 = 1,729.17/x
  3. Step 3: Cross multiply
    2,791.68x = 3,851.29 × 1,729.17
  4. Step 4: Simplify right side
    2,791.68x = 6,659,507.23
  5. Step 5: Solve for x
    x = 6,659,507.23/2,791.68
  6. Step 6: Final answer
    x = 2,385.48

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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.