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Finding the Fourth Proportional to 8,339.05, 11,502.43 and 4,979.24

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Solution

The fourth proportional to 8,339.05, 11,502.43 and 4,979.24 is: 6,868.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.05 : 11,502.43 = 4,979.24 : x
  2. Step 2: Convert to fraction form
    8,339.05/11,502.43 = 4,979.24/x
  3. Step 3: Cross multiply
    8,339.05x = 11,502.43 × 4,979.24
  4. Step 4: Simplify right side
    8,339.05x = 57,273,289.59
  5. Step 5: Solve for x
    x = 57,273,289.59/8,339.05
  6. Step 6: Final answer
    x = 6,868.09

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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.