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Finding the Fourth Proportional to 6,138.39, 8,472.07 and 3,620.34

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Solution

The fourth proportional to 6,138.39, 8,472.07 and 3,620.34 is: 4,996.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.39 : 8,472.07 = 3,620.34 : x
  2. Step 2: Convert to fraction form
    6,138.39/8,472.07 = 3,620.34/x
  3. Step 3: Cross multiply
    6,138.39x = 8,472.07 × 3,620.34
  4. Step 4: Simplify right side
    6,138.39x = 30,671,773.90
  5. Step 5: Solve for x
    x = 30,671,773.90/6,138.39
  6. Step 6: Final answer
    x = 4,996.71

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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.