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Finding the Fourth Proportional to 8,804.67, 13,206.90 and 2,141.21

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Solution

The fourth proportional to 8,804.67, 13,206.90 and 2,141.21 is: 3,211.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,804.67 : 13,206.90 = 2,141.21 : x
  2. Step 2: Convert to fraction form
    8,804.67/13,206.90 = 2,141.21/x
  3. Step 3: Cross multiply
    8,804.67x = 13,206.90 × 2,141.21
  4. Step 4: Simplify right side
    8,804.67x = 28,278,669.61
  5. Step 5: Solve for x
    x = 28,278,669.61/8,804.67
  6. Step 6: Final answer
    x = 3,211.78

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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.