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Finding the Fourth Proportional to 3,879.17, 5,317.15 and 3,824.49

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Solution

The fourth proportional to 3,879.17, 5,317.15 and 3,824.49 is: 5,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.17 : 5,317.15 = 3,824.49 : x
  2. Step 2: Convert to fraction form
    3,879.17/5,317.15 = 3,824.49/x
  3. Step 3: Cross multiply
    3,879.17x = 5,317.15 × 3,824.49
  4. Step 4: Simplify right side
    3,879.17x = 20,335,387.00
  5. Step 5: Solve for x
    x = 20,335,387.00/3,879.17
  6. Step 6: Final answer
    x = 5,242.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.