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Finding the Fourth Proportional to 8,694.12, 11,999.12 and 4,918.44

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Solution

The fourth proportional to 8,694.12, 11,999.12 and 4,918.44 is: 6,788.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.12 : 11,999.12 = 4,918.44 : x
  2. Step 2: Convert to fraction form
    8,694.12/11,999.12 = 4,918.44/x
  3. Step 3: Cross multiply
    8,694.12x = 11,999.12 × 4,918.44
  4. Step 4: Simplify right side
    8,694.12x = 59,016,951.77
  5. Step 5: Solve for x
    x = 59,016,951.77/8,694.12
  6. Step 6: Final answer
    x = 6,788.15

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1.5x scale

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.