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Finding the Fourth Proportional to 6,679.39, 10,005.22 and 3,385.55

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Solution

The fourth proportional to 6,679.39, 10,005.22 and 3,385.55 is: 5,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,679.39 : 10,005.22 = 3,385.55 : x
  2. Step 2: Convert to fraction form
    6,679.39/10,005.22 = 3,385.55/x
  3. Step 3: Cross multiply
    6,679.39x = 10,005.22 × 3,385.55
  4. Step 4: Simplify right side
    6,679.39x = 33,873,145.54
  5. Step 5: Solve for x
    x = 33,873,145.54/6,679.39
  6. Step 6: Final answer
    x = 5,071.30

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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.