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Finding the Fourth Proportional to 8,602.67, 12,902.79 and 2,758.52

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Solution

The fourth proportional to 8,602.67, 12,902.79 and 2,758.52 is: 4,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.67 : 12,902.79 = 2,758.52 : x
  2. Step 2: Convert to fraction form
    8,602.67/12,902.79 = 2,758.52/x
  3. Step 3: Cross multiply
    8,602.67x = 12,902.79 × 2,758.52
  4. Step 4: Simplify right side
    8,602.67x = 35,592,646.87
  5. Step 5: Solve for x
    x = 35,592,646.87/8,602.67
  6. Step 6: Final answer
    x = 4,137.39

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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.