Home / 2,709.12-4,077.92-2,067.84

Finding the Fourth Proportional to 2,709.12, 4,077.92 and 2,067.84

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Solution

The fourth proportional to 2,709.12, 4,077.92 and 2,067.84 is: 3,112.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.12 : 4,077.92 = 2,067.84 : x
  2. Step 2: Convert to fraction form
    2,709.12/4,077.92 = 2,067.84/x
  3. Step 3: Cross multiply
    2,709.12x = 4,077.92 × 2,067.84
  4. Step 4: Simplify right side
    2,709.12x = 8,432,486.09
  5. Step 5: Solve for x
    x = 8,432,486.09/2,709.12
  6. Step 6: Final answer
    x = 3,112.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.