Home / 2,947.72-4,067.93-1,621.43

Finding the Fourth Proportional to 2,947.72, 4,067.93 and 1,621.43

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Solution

The fourth proportional to 2,947.72, 4,067.93 and 1,621.43 is: 2,237.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.72 : 4,067.93 = 1,621.43 : x
  2. Step 2: Convert to fraction form
    2,947.72/4,067.93 = 1,621.43/x
  3. Step 3: Cross multiply
    2,947.72x = 4,067.93 × 1,621.43
  4. Step 4: Simplify right side
    2,947.72x = 6,595,870.71
  5. Step 5: Solve for x
    x = 6,595,870.71/2,947.72
  6. Step 6: Final answer
    x = 2,237.62

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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.