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Finding the Fourth Proportional to 7,988.57, 11,988.18 and 2,794.44

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Solution

The fourth proportional to 7,988.57, 11,988.18 and 2,794.44 is: 4,193.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.57 : 11,988.18 = 2,794.44 : x
  2. Step 2: Convert to fraction form
    7,988.57/11,988.18 = 2,794.44/x
  3. Step 3: Cross multiply
    7,988.57x = 11,988.18 × 2,794.44
  4. Step 4: Simplify right side
    7,988.57x = 33,500,249.72
  5. Step 5: Solve for x
    x = 33,500,249.72/7,988.57
  6. Step 6: Final answer
    x = 4,193.52

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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.