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Finding the Fourth Proportional to 8,326.84, 11,491.06 and 4,789.81

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Solution

The fourth proportional to 8,326.84, 11,491.06 and 4,789.81 is: 6,609.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.84 : 11,491.06 = 4,789.81 : x
  2. Step 2: Convert to fraction form
    8,326.84/11,491.06 = 4,789.81/x
  3. Step 3: Cross multiply
    8,326.84x = 11,491.06 × 4,789.81
  4. Step 4: Simplify right side
    8,326.84x = 55,039,994.10
  5. Step 5: Solve for x
    x = 55,039,994.10/8,326.84
  6. Step 6: Final answer
    x = 6,609.95

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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.