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Finding the Fourth Proportional to 2,665.44, 3,996.64 and 1,020.96

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Solution

The fourth proportional to 2,665.44, 3,996.64 and 1,020.96 is: 1,530.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.44 : 3,996.64 = 1,020.96 : x
  2. Step 2: Convert to fraction form
    2,665.44/3,996.64 = 1,020.96/x
  3. Step 3: Cross multiply
    2,665.44x = 3,996.64 × 1,020.96
  4. Step 4: Simplify right side
    2,665.44x = 4,080,409.57
  5. Step 5: Solve for x
    x = 4,080,409.57/2,665.44
  6. Step 6: Final answer
    x = 1,530.86

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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.