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Finding the Fourth Proportional to 8,616.51, 12,902.83 and 6,881.49

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Solution

The fourth proportional to 8,616.51, 12,902.83 and 6,881.49 is: 10,304.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.51 : 12,902.83 = 6,881.49 : x
  2. Step 2: Convert to fraction form
    8,616.51/12,902.83 = 6,881.49/x
  3. Step 3: Cross multiply
    8,616.51x = 12,902.83 × 6,881.49
  4. Step 4: Simplify right side
    8,616.51x = 88,790,678.41
  5. Step 5: Solve for x
    x = 88,790,678.41/8,616.51
  6. Step 6: Final answer
    x = 10,304.71

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1.5x scale

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.