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Finding the Fourth Proportional to 8,326.76, 12,491.34 and 3,133.84

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Solution

The fourth proportional to 8,326.76, 12,491.34 and 3,133.84 is: 4,701.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.76 : 12,491.34 = 3,133.84 : x
  2. Step 2: Convert to fraction form
    8,326.76/12,491.34 = 3,133.84/x
  3. Step 3: Cross multiply
    8,326.76x = 12,491.34 × 3,133.84
  4. Step 4: Simplify right side
    8,326.76x = 39,145,860.95
  5. Step 5: Solve for x
    x = 39,145,860.95/8,326.76
  6. Step 6: Final answer
    x = 4,701.21

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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.