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Finding the Fourth Proportional to 5,512.56, 8,269.97 and 1,815.01

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Solution

The fourth proportional to 5,512.56, 8,269.97 and 1,815.01 is: 2,722.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,512.56 : 8,269.97 = 1,815.01 : x
  2. Step 2: Convert to fraction form
    5,512.56/8,269.97 = 1,815.01/x
  3. Step 3: Cross multiply
    5,512.56x = 8,269.97 × 1,815.01
  4. Step 4: Simplify right side
    5,512.56x = 15,010,062.11
  5. Step 5: Solve for x
    x = 15,010,062.11/5,512.56
  6. Step 6: Final answer
    x = 2,722.89

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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.