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Finding the Fourth Proportional to 2,639.69, 3,641.18 and 1,743.44

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Solution

The fourth proportional to 2,639.69, 3,641.18 and 1,743.44 is: 2,404.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.69 : 3,641.18 = 1,743.44 : x
  2. Step 2: Convert to fraction form
    2,639.69/3,641.18 = 1,743.44/x
  3. Step 3: Cross multiply
    2,639.69x = 3,641.18 × 1,743.44
  4. Step 4: Simplify right side
    2,639.69x = 6,348,160.65
  5. Step 5: Solve for x
    x = 6,348,160.65/2,639.69
  6. Step 6: Final answer
    x = 2,404.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.