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Finding the Fourth Proportional to 3,486.46, 5,229.96 and 889.39

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Solution

The fourth proportional to 3,486.46, 5,229.96 and 889.39 is: 1,334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.46 : 5,229.96 = 889.39 : x
  2. Step 2: Convert to fraction form
    3,486.46/5,229.96 = 889.39/x
  3. Step 3: Cross multiply
    3,486.46x = 5,229.96 × 889.39
  4. Step 4: Simplify right side
    3,486.46x = 4,651,474.12
  5. Step 5: Solve for x
    x = 4,651,474.12/3,486.46
  6. Step 6: Final answer
    x = 1,334.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.