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Finding the Fourth Proportional to 4,589.92, 6,879.97 and 1,815.39

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Solution

The fourth proportional to 4,589.92, 6,879.97 and 1,815.39 is: 2,721.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,589.92 : 6,879.97 = 1,815.39 : x
  2. Step 2: Convert to fraction form
    4,589.92/6,879.97 = 1,815.39/x
  3. Step 3: Cross multiply
    4,589.92x = 6,879.97 × 1,815.39
  4. Step 4: Simplify right side
    4,589.92x = 12,489,828.74
  5. Step 5: Solve for x
    x = 12,489,828.74/4,589.92
  6. Step 6: Final answer
    x = 2,721.14

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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.