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Finding the Fourth Proportional to 8,756.62, 12,083.82 and 4,979.94

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Solution

The fourth proportional to 8,756.62, 12,083.82 and 4,979.94 is: 6,872.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.62 : 12,083.82 = 4,979.94 : x
  2. Step 2: Convert to fraction form
    8,756.62/12,083.82 = 4,979.94/x
  3. Step 3: Cross multiply
    8,756.62x = 12,083.82 × 4,979.94
  4. Step 4: Simplify right side
    8,756.62x = 60,176,698.57
  5. Step 5: Solve for x
    x = 60,176,698.57/8,756.62
  6. Step 6: Final answer
    x = 6,872.14

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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.