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Finding the Fourth Proportional to 7,843.42, 11,766.88 and 2,649.16

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Solution

The fourth proportional to 7,843.42, 11,766.88 and 2,649.16 is: 3,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,843.42 : 11,766.88 = 2,649.16 : x
  2. Step 2: Convert to fraction form
    7,843.42/11,766.88 = 2,649.16/x
  3. Step 3: Cross multiply
    7,843.42x = 11,766.88 × 2,649.16
  4. Step 4: Simplify right side
    7,843.42x = 31,172,318.40
  5. Step 5: Solve for x
    x = 31,172,318.40/7,843.42
  6. Step 6: Final answer
    x = 3,974.33

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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.