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Finding the Fourth Proportional to 3,958.58, 5,459.22 and 3,398.88

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Solution

The fourth proportional to 3,958.58, 5,459.22 and 3,398.88 is: 4,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.58 : 5,459.22 = 3,398.88 : x
  2. Step 2: Convert to fraction form
    3,958.58/5,459.22 = 3,398.88/x
  3. Step 3: Cross multiply
    3,958.58x = 5,459.22 × 3,398.88
  4. Step 4: Simplify right side
    3,958.58x = 18,555,233.67
  5. Step 5: Solve for x
    x = 18,555,233.67/3,958.58
  6. Step 6: Final answer
    x = 4,687.35

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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.