Home / 2,947.28-4,067.33-1,688.22

Finding the Fourth Proportional to 2,947.28, 4,067.33 and 1,688.22

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Solution

The fourth proportional to 2,947.28, 4,067.33 and 1,688.22 is: 2,329.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.28 : 4,067.33 = 1,688.22 : x
  2. Step 2: Convert to fraction form
    2,947.28/4,067.33 = 1,688.22/x
  3. Step 3: Cross multiply
    2,947.28x = 4,067.33 × 1,688.22
  4. Step 4: Simplify right side
    2,947.28x = 6,866,539.41
  5. Step 5: Solve for x
    x = 6,866,539.41/2,947.28
  6. Step 6: Final answer
    x = 2,329.79

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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.