Home / 2,947.78-4,067.97-1,621.60

Finding the Fourth Proportional to 2,947.78, 4,067.97 and 1,621.60

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Solution

The fourth proportional to 2,947.78, 4,067.97 and 1,621.60 is: 2,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.78 : 4,067.97 = 1,621.60 : x
  2. Step 2: Convert to fraction form
    2,947.78/4,067.97 = 1,621.60/x
  3. Step 3: Cross multiply
    2,947.78x = 4,067.97 × 1,621.60
  4. Step 4: Simplify right side
    2,947.78x = 6,596,620.15
  5. Step 5: Solve for x
    x = 6,596,620.15/2,947.78
  6. Step 6: Final answer
    x = 2,237.83

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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.