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Finding the Fourth Proportional to 6,398.87, 8,832.65 and 3,747.13

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Solution

The fourth proportional to 6,398.87, 8,832.65 and 3,747.13 is: 5,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398.87 : 8,832.65 = 3,747.13 : x
  2. Step 2: Convert to fraction form
    6,398.87/8,832.65 = 3,747.13/x
  3. Step 3: Cross multiply
    6,398.87x = 8,832.65 × 3,747.13
  4. Step 4: Simplify right side
    6,398.87x = 33,097,087.79
  5. Step 5: Solve for x
    x = 33,097,087.79/6,398.87
  6. Step 6: Final answer
    x = 5,172.33

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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.