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Finding the Fourth Proportional to 6,754.36, 9,321.90 and 3,960.12

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Solution

The fourth proportional to 6,754.36, 9,321.90 and 3,960.12 is: 5,465.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,754.36 : 9,321.90 = 3,960.12 : x
  2. Step 2: Convert to fraction form
    6,754.36/9,321.90 = 3,960.12/x
  3. Step 3: Cross multiply
    6,754.36x = 9,321.90 × 3,960.12
  4. Step 4: Simplify right side
    6,754.36x = 36,915,842.63
  5. Step 5: Solve for x
    x = 36,915,842.63/6,754.36
  6. Step 6: Final answer
    x = 5,465.48

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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.