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Finding the Fourth Proportional to 8,326.76, 12,483.98 and 3,939.08

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Solution

The fourth proportional to 8,326.76, 12,483.98 and 3,939.08 is: 5,905.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.76 : 12,483.98 = 3,939.08 : x
  2. Step 2: Convert to fraction form
    8,326.76/12,483.98 = 3,939.08/x
  3. Step 3: Cross multiply
    8,326.76x = 12,483.98 × 3,939.08
  4. Step 4: Simplify right side
    8,326.76x = 49,175,395.94
  5. Step 5: Solve for x
    x = 49,175,395.94/8,326.76
  6. Step 6: Final answer
    x = 5,905.71

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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.