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Finding the Fourth Proportional to 3,672.63, 5,078.21 and 3,613.29

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Solution

The fourth proportional to 3,672.63, 5,078.21 and 3,613.29 is: 4,996.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,672.63 : 5,078.21 = 3,613.29 : x
  2. Step 2: Convert to fraction form
    3,672.63/5,078.21 = 3,613.29/x
  3. Step 3: Cross multiply
    3,672.63x = 5,078.21 × 3,613.29
  4. Step 4: Simplify right side
    3,672.63x = 18,349,001.95
  5. Step 5: Solve for x
    x = 18,349,001.95/3,672.63
  6. Step 6: Final answer
    x = 4,996.15

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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.