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Finding the Fourth Proportional to 7,287, 10,930.50 and 2,670

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Solution

The fourth proportional to 7,287, 10,930.50 and 2,670 is: 4,005

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287 : 10,930.50 = 2,670 : x
  2. Step 2: Convert to fraction form
    7,287/10,930.50 = 2,670/x
  3. Step 3: Cross multiply
    7,287x = 10,930.50 × 2,670
  4. Step 4: Simplify right side
    7,287x = 29,184,435
  5. Step 5: Solve for x
    x = 29,184,435/7,287
  6. Step 6: Final answer
    x = 4,005

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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.