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Finding the Fourth Proportional to 8,755.28, 12,080.13 and 5,351.42

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Solution

The fourth proportional to 8,755.28, 12,080.13 and 5,351.42 is: 7,383.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.28 : 12,080.13 = 5,351.42 : x
  2. Step 2: Convert to fraction form
    8,755.28/12,080.13 = 5,351.42/x
  3. Step 3: Cross multiply
    8,755.28x = 12,080.13 × 5,351.42
  4. Step 4: Simplify right side
    8,755.28x = 64,645,849.28
  5. Step 5: Solve for x
    x = 64,645,849.28/8,755.28
  6. Step 6: Final answer
    x = 7,383.64

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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.