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Finding the Fourth Proportional to 3,392.70, 5,079.45 and 3,296.70

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Solution

The fourth proportional to 3,392.70, 5,079.45 and 3,296.70 is: 4,935.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.70 : 5,079.45 = 3,296.70 : x
  2. Step 2: Convert to fraction form
    3,392.70/5,079.45 = 3,296.70/x
  3. Step 3: Cross multiply
    3,392.70x = 5,079.45 × 3,296.70
  4. Step 4: Simplify right side
    3,392.70x = 16,745,422.82
  5. Step 5: Solve for x
    x = 16,745,422.82/3,392.70
  6. Step 6: Final answer
    x = 4,935.72

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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.