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Finding the Fourth Proportional to 8,713.28, 12,028.02 and 5,573.72

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Solution

The fourth proportional to 8,713.28, 12,028.02 and 5,573.72 is: 7,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.28 : 12,028.02 = 5,573.72 : x
  2. Step 2: Convert to fraction form
    8,713.28/12,028.02 = 5,573.72/x
  3. Step 3: Cross multiply
    8,713.28x = 12,028.02 × 5,573.72
  4. Step 4: Simplify right side
    8,713.28x = 67,040,815.63
  5. Step 5: Solve for x
    x = 67,040,815.63/8,713.28
  6. Step 6: Final answer
    x = 7,694.10

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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.