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Finding the Fourth Proportional to 8,768.65, 12,100.47 and 4,789.75

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Solution

The fourth proportional to 8,768.65, 12,100.47 and 4,789.75 is: 6,609.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.65 : 12,100.47 = 4,789.75 : x
  2. Step 2: Convert to fraction form
    8,768.65/12,100.47 = 4,789.75/x
  3. Step 3: Cross multiply
    8,768.65x = 12,100.47 × 4,789.75
  4. Step 4: Simplify right side
    8,768.65x = 57,958,226.18
  5. Step 5: Solve for x
    x = 57,958,226.18/8,768.65
  6. Step 6: Final answer
    x = 6,609.71

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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.