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Finding the Fourth Proportional to 6,449.80, 9,674.70 and 2,067.40

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Solution

The fourth proportional to 6,449.80, 9,674.70 and 2,067.40 is: 3,101.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449.80 : 9,674.70 = 2,067.40 : x
  2. Step 2: Convert to fraction form
    6,449.80/9,674.70 = 2,067.40/x
  3. Step 3: Cross multiply
    6,449.80x = 9,674.70 × 2,067.40
  4. Step 4: Simplify right side
    6,449.80x = 20,001,474.78
  5. Step 5: Solve for x
    x = 20,001,474.78/6,449.80
  6. Step 6: Final answer
    x = 3,101.10

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Similar ratio
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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.