Home / 2,947.83-4,067.88-1,621.40

Finding the Fourth Proportional to 2,947.83, 4,067.88 and 1,621.40

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Solution

The fourth proportional to 2,947.83, 4,067.88 and 1,621.40 is: 2,237.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.83 : 4,067.88 = 1,621.40 : x
  2. Step 2: Convert to fraction form
    2,947.83/4,067.88 = 1,621.40/x
  3. Step 3: Cross multiply
    2,947.83x = 4,067.88 × 1,621.40
  4. Step 4: Simplify right side
    2,947.83x = 6,595,640.29
  5. Step 5: Solve for x
    x = 6,595,640.29/2,947.83
  6. Step 6: Final answer
    x = 2,237.46

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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.