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Finding the Fourth Proportional to 7,103.94, 10,660.20 and 2,721.78

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Solution

The fourth proportional to 7,103.94, 10,660.20 and 2,721.78 is: 4,084.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,103.94 : 10,660.20 = 2,721.78 : x
  2. Step 2: Convert to fraction form
    7,103.94/10,660.20 = 2,721.78/x
  3. Step 3: Cross multiply
    7,103.94x = 10,660.20 × 2,721.78
  4. Step 4: Simplify right side
    7,103.94x = 29,014,719.16
  5. Step 5: Solve for x
    x = 29,014,719.16/7,103.94
  6. Step 6: Final answer
    x = 4,084.31

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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.