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Finding the Fourth Proportional to 8,768.09, 12,100.03 and 4,789.31

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Solution

The fourth proportional to 8,768.09, 12,100.03 and 4,789.31 is: 6,609.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.09 : 12,100.03 = 4,789.31 : x
  2. Step 2: Convert to fraction form
    8,768.09/12,100.03 = 4,789.31/x
  3. Step 3: Cross multiply
    8,768.09x = 12,100.03 × 4,789.31
  4. Step 4: Simplify right side
    8,768.09x = 57,950,734.18
  5. Step 5: Solve for x
    x = 57,950,734.18/8,768.09
  6. Step 6: Final answer
    x = 6,609.28

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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.