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Finding the Fourth Proportional to 5,167.38, 7,131.07 and 2,929.21

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Solution

The fourth proportional to 5,167.38, 7,131.07 and 2,929.21 is: 4,042.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.38 : 7,131.07 = 2,929.21 : x
  2. Step 2: Convert to fraction form
    5,167.38/7,131.07 = 2,929.21/x
  3. Step 3: Cross multiply
    5,167.38x = 7,131.07 × 2,929.21
  4. Step 4: Simplify right side
    5,167.38x = 20,888,387.39
  5. Step 5: Solve for x
    x = 20,888,387.39/5,167.38
  6. Step 6: Final answer
    x = 4,042.35

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1.5x scale

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.