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Finding the Fourth Proportional to 2,187.54, 3,279 and 1,264.92

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Solution

The fourth proportional to 2,187.54, 3,279 and 1,264.92 is: 1,896.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.54 : 3,279 = 1,264.92 : x
  2. Step 2: Convert to fraction form
    2,187.54/3,279 = 1,264.92/x
  3. Step 3: Cross multiply
    2,187.54x = 3,279 × 1,264.92
  4. Step 4: Simplify right side
    2,187.54x = 4,147,672.68
  5. Step 5: Solve for x
    x = 4,147,672.68/2,187.54
  6. Step 6: Final answer
    x = 1,896.04

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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.