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Finding the Fourth Proportional to 7,207.91, 10,811.90 and 2,013.78

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Solution

The fourth proportional to 7,207.91, 10,811.90 and 2,013.78 is: 3,020.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,207.91 : 10,811.90 = 2,013.78 : x
  2. Step 2: Convert to fraction form
    7,207.91/10,811.90 = 2,013.78/x
  3. Step 3: Cross multiply
    7,207.91x = 10,811.90 × 2,013.78
  4. Step 4: Simplify right side
    7,207.91x = 21,772,787.98
  5. Step 5: Solve for x
    x = 21,772,787.98/7,207.91
  6. Step 6: Final answer
    x = 3,020.68

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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.