Home / 4,979.88-7,469.82-2,788.61

Finding the Fourth Proportional to 4,979.88, 7,469.82 and 2,788.61

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Solution

The fourth proportional to 4,979.88, 7,469.82 and 2,788.61 is: 4,182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.88 : 7,469.82 = 2,788.61 : x
  2. Step 2: Convert to fraction form
    4,979.88/7,469.82 = 2,788.61/x
  3. Step 3: Cross multiply
    4,979.88x = 7,469.82 × 2,788.61
  4. Step 4: Simplify right side
    4,979.88x = 20,830,377.40
  5. Step 5: Solve for x
    x = 20,830,377.40/4,979.88
  6. Step 6: Final answer
    x = 4,182.91

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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.