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Finding the Fourth Proportional to 8,736.16, 12,054.96 and 5,198.80

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Solution

The fourth proportional to 8,736.16, 12,054.96 and 5,198.80 is: 7,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.16 : 12,054.96 = 5,198.80 : x
  2. Step 2: Convert to fraction form
    8,736.16/12,054.96 = 5,198.80/x
  3. Step 3: Cross multiply
    8,736.16x = 12,054.96 × 5,198.80
  4. Step 4: Simplify right side
    8,736.16x = 62,671,326.05
  5. Step 5: Solve for x
    x = 62,671,326.05/8,736.16
  6. Step 6: Final answer
    x = 7,173.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.