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Finding the Fourth Proportional to 3,885.01, 5,361.32 and 2,116.62

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Solution

The fourth proportional to 3,885.01, 5,361.32 and 2,116.62 is: 2,920.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.01 : 5,361.32 = 2,116.62 : x
  2. Step 2: Convert to fraction form
    3,885.01/5,361.32 = 2,116.62/x
  3. Step 3: Cross multiply
    3,885.01x = 5,361.32 × 2,116.62
  4. Step 4: Simplify right side
    3,885.01x = 11,347,882.43
  5. Step 5: Solve for x
    x = 11,347,882.43/3,885.01
  6. Step 6: Final answer
    x = 2,920.94

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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.