Home / 2,947.89-4,067.91-1,621.32

Finding the Fourth Proportional to 2,947.89, 4,067.91 and 1,621.32

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Solution

The fourth proportional to 2,947.89, 4,067.91 and 1,621.32 is: 2,237.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.89 : 4,067.91 = 1,621.32 : x
  2. Step 2: Convert to fraction form
    2,947.89/4,067.91 = 1,621.32/x
  3. Step 3: Cross multiply
    2,947.89x = 4,067.91 × 1,621.32
  4. Step 4: Simplify right side
    2,947.89x = 6,595,383.84
  5. Step 5: Solve for x
    x = 6,595,383.84/2,947.89
  6. Step 6: Final answer
    x = 2,237.32

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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.