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Finding the Fourth Proportional to 2,672.54, 4,009.41 and 1,212.11

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Solution

The fourth proportional to 2,672.54, 4,009.41 and 1,212.11 is: 1,818.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.54 : 4,009.41 = 1,212.11 : x
  2. Step 2: Convert to fraction form
    2,672.54/4,009.41 = 1,212.11/x
  3. Step 3: Cross multiply
    2,672.54x = 4,009.41 × 1,212.11
  4. Step 4: Simplify right side
    2,672.54x = 4,859,825.91
  5. Step 5: Solve for x
    x = 4,859,825.91/2,672.54
  6. Step 6: Final answer
    x = 1,818.43

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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.