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Finding the Fourth Proportional to 8,476.91, 12,717.07 and 2,930.47

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Solution

The fourth proportional to 8,476.91, 12,717.07 and 2,930.47 is: 4,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,476.91 : 12,717.07 = 2,930.47 : x
  2. Step 2: Convert to fraction form
    8,476.91/12,717.07 = 2,930.47/x
  3. Step 3: Cross multiply
    8,476.91x = 12,717.07 × 2,930.47
  4. Step 4: Simplify right side
    8,476.91x = 37,266,992.12
  5. Step 5: Solve for x
    x = 37,266,992.12/8,476.91
  6. Step 6: Final answer
    x = 4,396.29

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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.