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Finding the Fourth Proportional to 3,937.26, 5,398.21 and 3,867.06

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Solution

The fourth proportional to 3,937.26, 5,398.21 and 3,867.06 is: 5,301.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.26 : 5,398.21 = 3,867.06 : x
  2. Step 2: Convert to fraction form
    3,937.26/5,398.21 = 3,867.06/x
  3. Step 3: Cross multiply
    3,937.26x = 5,398.21 × 3,867.06
  4. Step 4: Simplify right side
    3,937.26x = 20,875,201.96
  5. Step 5: Solve for x
    x = 20,875,201.96/3,937.26
  6. Step 6: Final answer
    x = 5,301.96

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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.