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Finding the Fourth Proportional to 8,694.21, 11,995.25 and 4,916.91

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Solution

The fourth proportional to 8,694.21, 11,995.25 and 4,916.91 is: 6,783.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.21 : 11,995.25 = 4,916.91 : x
  2. Step 2: Convert to fraction form
    8,694.21/11,995.25 = 4,916.91/x
  3. Step 3: Cross multiply
    8,694.21x = 11,995.25 × 4,916.91
  4. Step 4: Simplify right side
    8,694.21x = 58,979,540.09
  5. Step 5: Solve for x
    x = 58,979,540.09/8,694.21
  6. Step 6: Final answer
    x = 6,783.77

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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.