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Finding the Fourth Proportional to 8,640.49, 12,961.92 and 2,795.14

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Solution

The fourth proportional to 8,640.49, 12,961.92 and 2,795.14 is: 4,193.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.49 : 12,961.92 = 2,795.14 : x
  2. Step 2: Convert to fraction form
    8,640.49/12,961.92 = 2,795.14/x
  3. Step 3: Cross multiply
    8,640.49x = 12,961.92 × 2,795.14
  4. Step 4: Simplify right side
    8,640.49x = 36,230,381.07
  5. Step 5: Solve for x
    x = 36,230,381.07/8,640.49
  6. Step 6: Final answer
    x = 4,193.09

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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.