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Finding the Fourth Proportional to 6,728.25, 9,281.52 and 3,932.13

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Solution

The fourth proportional to 6,728.25, 9,281.52 and 3,932.13 is: 5,424.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,728.25 : 9,281.52 = 3,932.13 : x
  2. Step 2: Convert to fraction form
    6,728.25/9,281.52 = 3,932.13/x
  3. Step 3: Cross multiply
    6,728.25x = 9,281.52 × 3,932.13
  4. Step 4: Simplify right side
    6,728.25x = 36,496,143.24
  5. Step 5: Solve for x
    x = 36,496,143.24/6,728.25
  6. Step 6: Final answer
    x = 5,424.31

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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.