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Finding the Fourth Proportional to 8,813.75, 12,162.98 and 5,087.75

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Solution

The fourth proportional to 8,813.75, 12,162.98 and 5,087.75 is: 7,021.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.75 : 12,162.98 = 5,087.75 : x
  2. Step 2: Convert to fraction form
    8,813.75/12,162.98 = 5,087.75/x
  3. Step 3: Cross multiply
    8,813.75x = 12,162.98 × 5,087.75
  4. Step 4: Simplify right side
    8,813.75x = 61,882,201.50
  5. Step 5: Solve for x
    x = 61,882,201.50/8,813.75
  6. Step 6: Final answer
    x = 7,021.10

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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.