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Finding the Fourth Proportional to 8,715.17, 13,072.89 and 2,793.17

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Solution

The fourth proportional to 8,715.17, 13,072.89 and 2,793.17 is: 4,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.17 : 13,072.89 = 2,793.17 : x
  2. Step 2: Convert to fraction form
    8,715.17/13,072.89 = 2,793.17/x
  3. Step 3: Cross multiply
    8,715.17x = 13,072.89 × 2,793.17
  4. Step 4: Simplify right side
    8,715.17x = 36,514,804.16
  5. Step 5: Solve for x
    x = 36,514,804.16/8,715.17
  6. Step 6: Final answer
    x = 4,189.80

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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.