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Finding the Fourth Proportional to 6,920.34, 9,550.20 and 3,936.24

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Solution

The fourth proportional to 6,920.34, 9,550.20 and 3,936.24 is: 5,432.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.34 : 9,550.20 = 3,936.24 : x
  2. Step 2: Convert to fraction form
    6,920.34/9,550.20 = 3,936.24/x
  3. Step 3: Cross multiply
    6,920.34x = 9,550.20 × 3,936.24
  4. Step 4: Simplify right side
    6,920.34x = 37,591,879.25
  5. Step 5: Solve for x
    x = 37,591,879.25/6,920.34
  6. Step 6: Final answer
    x = 5,432.09

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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.