Home / 2,947.58-4,067.91-1,621.55

Finding the Fourth Proportional to 2,947.58, 4,067.91 and 1,621.55

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Solution

The fourth proportional to 2,947.58, 4,067.91 and 1,621.55 is: 2,237.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.58 : 4,067.91 = 1,621.55 : x
  2. Step 2: Convert to fraction form
    2,947.58/4,067.91 = 1,621.55/x
  3. Step 3: Cross multiply
    2,947.58x = 4,067.91 × 1,621.55
  4. Step 4: Simplify right side
    2,947.58x = 6,596,319.46
  5. Step 5: Solve for x
    x = 6,596,319.46/2,947.58
  6. Step 6: Final answer
    x = 2,237.88

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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.