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Finding the Fourth Proportional to 3,471.53, 5,207.16 and 1,279.31

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Solution

The fourth proportional to 3,471.53, 5,207.16 and 1,279.31 is: 1,918.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.53 : 5,207.16 = 1,279.31 : x
  2. Step 2: Convert to fraction form
    3,471.53/5,207.16 = 1,279.31/x
  3. Step 3: Cross multiply
    3,471.53x = 5,207.16 × 1,279.31
  4. Step 4: Simplify right side
    3,471.53x = 6,661,571.86
  5. Step 5: Solve for x
    x = 6,661,571.86/3,471.53
  6. Step 6: Final answer
    x = 1,918.92

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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.