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Finding the Fourth Proportional to 8,693.36, 13,034.28 and 3,145.97

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Solution

The fourth proportional to 8,693.36, 13,034.28 and 3,145.97 is: 4,716.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.36 : 13,034.28 = 3,145.97 : x
  2. Step 2: Convert to fraction form
    8,693.36/13,034.28 = 3,145.97/x
  3. Step 3: Cross multiply
    8,693.36x = 13,034.28 × 3,145.97
  4. Step 4: Simplify right side
    8,693.36x = 41,005,486.44
  5. Step 5: Solve for x
    x = 41,005,486.44/8,693.36
  6. Step 6: Final answer
    x = 4,716.87

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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.