Home / 2,839.80-3,917.77-1,791.25

Finding the Fourth Proportional to 2,839.80, 3,917.77 and 1,791.25

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Solution

The fourth proportional to 2,839.80, 3,917.77 and 1,791.25 is: 2,471.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.80 : 3,917.77 = 1,791.25 : x
  2. Step 2: Convert to fraction form
    2,839.80/3,917.77 = 1,791.25/x
  3. Step 3: Cross multiply
    2,839.80x = 3,917.77 × 1,791.25
  4. Step 4: Simplify right side
    2,839.80x = 7,017,705.51
  5. Step 5: Solve for x
    x = 7,017,705.51/2,839.80
  6. Step 6: Final answer
    x = 2,471.20

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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.