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Finding the Fourth Proportional to 3,221.45, 4,832.18 and 881.29

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Solution

The fourth proportional to 3,221.45, 4,832.18 and 881.29 is: 1,321.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.45 : 4,832.18 = 881.29 : x
  2. Step 2: Convert to fraction form
    3,221.45/4,832.18 = 881.29/x
  3. Step 3: Cross multiply
    3,221.45x = 4,832.18 × 881.29
  4. Step 4: Simplify right side
    3,221.45x = 4,258,531.06
  5. Step 5: Solve for x
    x = 4,258,531.06/3,221.45
  6. Step 6: Final answer
    x = 1,321.93

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Similar ratio
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1.5x scale

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.