Home / 2,278.80-3,418.47-1,791.05

Finding the Fourth Proportional to 2,278.80, 3,418.47 and 1,791.05

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Solution

The fourth proportional to 2,278.80, 3,418.47 and 1,791.05 is: 2,686.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.80 : 3,418.47 = 1,791.05 : x
  2. Step 2: Convert to fraction form
    2,278.80/3,418.47 = 1,791.05/x
  3. Step 3: Cross multiply
    2,278.80x = 3,418.47 × 1,791.05
  4. Step 4: Simplify right side
    2,278.80x = 6,122,633.60
  5. Step 5: Solve for x
    x = 6,122,633.60/2,278.80
  6. Step 6: Final answer
    x = 2,686.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.