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Finding the Fourth Proportional to 7,273.78, 10,911.37 and 2,890.25

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Solution

The fourth proportional to 7,273.78, 10,911.37 and 2,890.25 is: 4,335.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,273.78 : 10,911.37 = 2,890.25 : x
  2. Step 2: Convert to fraction form
    7,273.78/10,911.37 = 2,890.25/x
  3. Step 3: Cross multiply
    7,273.78x = 10,911.37 × 2,890.25
  4. Step 4: Simplify right side
    7,273.78x = 31,536,618.03
  5. Step 5: Solve for x
    x = 31,536,618.03/7,273.78
  6. Step 6: Final answer
    x = 4,335.66

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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.