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Finding the Fourth Proportional to 5,217.71, 7,826.91 and 2,097.71

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Solution

The fourth proportional to 5,217.71, 7,826.91 and 2,097.71 is: 3,146.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.71 : 7,826.91 = 2,097.71 : x
  2. Step 2: Convert to fraction form
    5,217.71/7,826.91 = 2,097.71/x
  3. Step 3: Cross multiply
    5,217.71x = 7,826.91 × 2,097.71
  4. Step 4: Simplify right side
    5,217.71x = 16,418,592.62
  5. Step 5: Solve for x
    x = 16,418,592.62/5,217.71
  6. Step 6: Final answer
    x = 3,146.71

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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.