Home / 2,947.21-4,067.19-1,620.91

Finding the Fourth Proportional to 2,947.21, 4,067.19 and 1,620.91

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Solution

The fourth proportional to 2,947.21, 4,067.19 and 1,620.91 is: 2,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.21 : 4,067.19 = 1,620.91 : x
  2. Step 2: Convert to fraction form
    2,947.21/4,067.19 = 1,620.91/x
  3. Step 3: Cross multiply
    2,947.21x = 4,067.19 × 1,620.91
  4. Step 4: Simplify right side
    2,947.21x = 6,592,548.94
  5. Step 5: Solve for x
    x = 6,592,548.94/2,947.21
  6. Step 6: Final answer
    x = 2,236.88

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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.