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Finding the Fourth Proportional to 8,836.80, 12,194.64 and 5,251.20

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Solution

The fourth proportional to 8,836.80, 12,194.64 and 5,251.20 is: 7,246.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,836.80 : 12,194.64 = 5,251.20 : x
  2. Step 2: Convert to fraction form
    8,836.80/12,194.64 = 5,251.20/x
  3. Step 3: Cross multiply
    8,836.80x = 12,194.64 × 5,251.20
  4. Step 4: Simplify right side
    8,836.80x = 64,036,493.57
  5. Step 5: Solve for x
    x = 64,036,493.57/8,836.80
  6. Step 6: Final answer
    x = 7,246.57

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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.