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Finding the Fourth Proportional to 3,813.55, 5,721.54 and 1,349.94

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Solution

The fourth proportional to 3,813.55, 5,721.54 and 1,349.94 is: 2,025.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.55 : 5,721.54 = 1,349.94 : x
  2. Step 2: Convert to fraction form
    3,813.55/5,721.54 = 1,349.94/x
  3. Step 3: Cross multiply
    3,813.55x = 5,721.54 × 1,349.94
  4. Step 4: Simplify right side
    3,813.55x = 7,723,735.71
  5. Step 5: Solve for x
    x = 7,723,735.71/3,813.55
  6. Step 6: Final answer
    x = 2,025.34

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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.