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Finding the Fourth Proportional to 2,711.81, 3,742.34 and 1,469.81

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Solution

The fourth proportional to 2,711.81, 3,742.34 and 1,469.81 is: 2,028.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.81 : 3,742.34 = 1,469.81 : x
  2. Step 2: Convert to fraction form
    2,711.81/3,742.34 = 1,469.81/x
  3. Step 3: Cross multiply
    2,711.81x = 3,742.34 × 1,469.81
  4. Step 4: Simplify right side
    2,711.81x = 5,500,530.76
  5. Step 5: Solve for x
    x = 5,500,530.76/2,711.81
  6. Step 6: Final answer
    x = 2,028.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.