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Finding the Fourth Proportional to 2,472.71, 3,704.40 and 1,922.21

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Solution

The fourth proportional to 2,472.71, 3,704.40 and 1,922.21 is: 2,879.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,472.71 : 3,704.40 = 1,922.21 : x
  2. Step 2: Convert to fraction form
    2,472.71/3,704.40 = 1,922.21/x
  3. Step 3: Cross multiply
    2,472.71x = 3,704.40 × 1,922.21
  4. Step 4: Simplify right side
    2,472.71x = 7,120,630.09
  5. Step 5: Solve for x
    x = 7,120,630.09/2,472.71
  6. Step 6: Final answer
    x = 2,879.69

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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.