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Finding the Fourth Proportional to 2,672.73, 4,009.91 and 1,211.49

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Solution

The fourth proportional to 2,672.73, 4,009.91 and 1,211.49 is: 1,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.73 : 4,009.91 = 1,211.49 : x
  2. Step 2: Convert to fraction form
    2,672.73/4,009.91 = 1,211.49/x
  3. Step 3: Cross multiply
    2,672.73x = 4,009.91 × 1,211.49
  4. Step 4: Simplify right side
    2,672.73x = 4,857,959.81
  5. Step 5: Solve for x
    x = 4,857,959.81/2,672.73
  6. Step 6: Final answer
    x = 1,817.60

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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.