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Finding the Fourth Proportional to 5,171.32, 7,759.08 and 2,828.48

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Solution

The fourth proportional to 5,171.32, 7,759.08 and 2,828.48 is: 4,243.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.32 : 7,759.08 = 2,828.48 : x
  2. Step 2: Convert to fraction form
    5,171.32/7,759.08 = 2,828.48/x
  3. Step 3: Cross multiply
    5,171.32x = 7,759.08 × 2,828.48
  4. Step 4: Simplify right side
    5,171.32x = 21,946,422.00
  5. Step 5: Solve for x
    x = 21,946,422.00/5,171.32
  6. Step 6: Final answer
    x = 4,243.87

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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.