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Finding the Fourth Proportional to 3,790.54, 5,687.54 and 1,711.09

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Solution

The fourth proportional to 3,790.54, 5,687.54 and 1,711.09 is: 2,567.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.54 : 5,687.54 = 1,711.09 : x
  2. Step 2: Convert to fraction form
    3,790.54/5,687.54 = 1,711.09/x
  3. Step 3: Cross multiply
    3,790.54x = 5,687.54 × 1,711.09
  4. Step 4: Simplify right side
    3,790.54x = 9,731,892.82
  5. Step 5: Solve for x
    x = 9,731,892.82/3,790.54
  6. Step 6: Final answer
    x = 2,567.42

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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.