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Finding the Fourth Proportional to 8,679.54, 13,020.93 and 2,837.82

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Solution

The fourth proportional to 8,679.54, 13,020.93 and 2,837.82 is: 4,257.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.54 : 13,020.93 = 2,837.82 : x
  2. Step 2: Convert to fraction form
    8,679.54/13,020.93 = 2,837.82/x
  3. Step 3: Cross multiply
    8,679.54x = 13,020.93 × 2,837.82
  4. Step 4: Simplify right side
    8,679.54x = 36,951,055.57
  5. Step 5: Solve for x
    x = 36,951,055.57/8,679.54
  6. Step 6: Final answer
    x = 4,257.26

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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.