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Finding the Fourth Proportional to 6,472.78, 9,709.07 and 2,090.58

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Solution

The fourth proportional to 6,472.78, 9,709.07 and 2,090.58 is: 3,135.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472.78 : 9,709.07 = 2,090.58 : x
  2. Step 2: Convert to fraction form
    6,472.78/9,709.07 = 2,090.58/x
  3. Step 3: Cross multiply
    6,472.78x = 9,709.07 × 2,090.58
  4. Step 4: Simplify right side
    6,472.78x = 20,297,540.70
  5. Step 5: Solve for x
    x = 20,297,540.70/6,472.78
  6. Step 6: Final answer
    x = 3,135.83

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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.