Home / 2,947.25-4,422.90-1,215.88

Finding the Fourth Proportional to 2,947.25, 4,422.90 and 1,215.88

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Solution

The fourth proportional to 2,947.25, 4,422.90 and 1,215.88 is: 1,824.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.25 : 4,422.90 = 1,215.88 : x
  2. Step 2: Convert to fraction form
    2,947.25/4,422.90 = 1,215.88/x
  3. Step 3: Cross multiply
    2,947.25x = 4,422.90 × 1,215.88
  4. Step 4: Simplify right side
    2,947.25x = 5,377,715.65
  5. Step 5: Solve for x
    x = 5,377,715.65/2,947.25
  6. Step 6: Final answer
    x = 1,824.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.