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Finding the Fourth Proportional to 3,399.86, 4,713.54 and 3,279.57

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Solution

The fourth proportional to 3,399.86, 4,713.54 and 3,279.57 is: 4,546.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.86 : 4,713.54 = 3,279.57 : x
  2. Step 2: Convert to fraction form
    3,399.86/4,713.54 = 3,279.57/x
  3. Step 3: Cross multiply
    3,399.86x = 4,713.54 × 3,279.57
  4. Step 4: Simplify right side
    3,399.86x = 15,458,384.38
  5. Step 5: Solve for x
    x = 15,458,384.38/3,399.86
  6. Step 6: Final answer
    x = 4,546.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.