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Finding the Fourth Proportional to 6,884.28, 9,500.09 and 3,900.11

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Solution

The fourth proportional to 6,884.28, 9,500.09 and 3,900.11 is: 5,382.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,884.28 : 9,500.09 = 3,900.11 : x
  2. Step 2: Convert to fraction form
    6,884.28/9,500.09 = 3,900.11/x
  3. Step 3: Cross multiply
    6,884.28x = 9,500.09 × 3,900.11
  4. Step 4: Simplify right side
    6,884.28x = 37,051,329.01
  5. Step 5: Solve for x
    x = 37,051,329.01/6,884.28
  6. Step 6: Final answer
    x = 5,382.02

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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.