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Finding the Fourth Proportional to 8,603.28, 12,906 and 2,758.32

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Solution

The fourth proportional to 8,603.28, 12,906 and 2,758.32 is: 4,137.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.28 : 12,906 = 2,758.32 : x
  2. Step 2: Convert to fraction form
    8,603.28/12,906 = 2,758.32/x
  3. Step 3: Cross multiply
    8,603.28x = 12,906 × 2,758.32
  4. Step 4: Simplify right side
    8,603.28x = 35,598,877.92
  5. Step 5: Solve for x
    x = 35,598,877.92/8,603.28
  6. Step 6: Final answer
    x = 4,137.83

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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.