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Finding the Fourth Proportional to 8,696.67, 11,998.57 and 4,919.47

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Solution

The fourth proportional to 8,696.67, 11,998.57 and 4,919.47 is: 6,787.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.67 : 11,998.57 = 4,919.47 : x
  2. Step 2: Convert to fraction form
    8,696.67/11,998.57 = 4,919.47/x
  3. Step 3: Cross multiply
    8,696.67x = 11,998.57 × 4,919.47
  4. Step 4: Simplify right side
    8,696.67x = 59,026,605.16
  5. Step 5: Solve for x
    x = 59,026,605.16/8,696.67
  6. Step 6: Final answer
    x = 6,787.27

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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.