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Finding the Fourth Proportional to 6,242.09, 8,612.60 and 3,882.96

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Solution

The fourth proportional to 6,242.09, 8,612.60 and 3,882.96 is: 5,357.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,242.09 : 8,612.60 = 3,882.96 : x
  2. Step 2: Convert to fraction form
    6,242.09/8,612.60 = 3,882.96/x
  3. Step 3: Cross multiply
    6,242.09x = 8,612.60 × 3,882.96
  4. Step 4: Simplify right side
    6,242.09x = 33,442,361.88
  5. Step 5: Solve for x
    x = 33,442,361.88/6,242.09
  6. Step 6: Final answer
    x = 5,357.56

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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.