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Finding the Fourth Proportional to 2,668.66, 4,001.36 and 1,369.42

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Solution

The fourth proportional to 2,668.66, 4,001.36 and 1,369.42 is: 2,053.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.66 : 4,001.36 = 1,369.42 : x
  2. Step 2: Convert to fraction form
    2,668.66/4,001.36 = 1,369.42/x
  3. Step 3: Cross multiply
    2,668.66x = 4,001.36 × 1,369.42
  4. Step 4: Simplify right side
    2,668.66x = 5,479,542.41
  5. Step 5: Solve for x
    x = 5,479,542.41/2,668.66
  6. Step 6: Final answer
    x = 2,053.29

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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.