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Finding the Fourth Proportional to 7,203.15, 10,800.41 and 2,815.38

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Solution

The fourth proportional to 7,203.15, 10,800.41 and 2,815.38 is: 4,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,203.15 : 10,800.41 = 2,815.38 : x
  2. Step 2: Convert to fraction form
    7,203.15/10,800.41 = 2,815.38/x
  3. Step 3: Cross multiply
    7,203.15x = 10,800.41 × 2,815.38
  4. Step 4: Simplify right side
    7,203.15x = 30,407,244.23
  5. Step 5: Solve for x
    x = 30,407,244.23/7,203.15
  6. Step 6: Final answer
    x = 4,221.38

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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.