Home / 2,986.58-4,120.62-1,791.02

Finding the Fourth Proportional to 2,986.58, 4,120.62 and 1,791.02

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Solution

The fourth proportional to 2,986.58, 4,120.62 and 1,791.02 is: 2,471.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.58 : 4,120.62 = 1,791.02 : x
  2. Step 2: Convert to fraction form
    2,986.58/4,120.62 = 1,791.02/x
  3. Step 3: Cross multiply
    2,986.58x = 4,120.62 × 1,791.02
  4. Step 4: Simplify right side
    2,986.58x = 7,380,112.83
  5. Step 5: Solve for x
    x = 7,380,112.83/2,986.58
  6. Step 6: Final answer
    x = 2,471.09

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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.