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Finding the Fourth Proportional to 8,605.03, 12,908.75 and 2,763.43

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Solution

The fourth proportional to 8,605.03, 12,908.75 and 2,763.43 is: 4,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.03 : 12,908.75 = 2,763.43 : x
  2. Step 2: Convert to fraction form
    8,605.03/12,908.75 = 2,763.43/x
  3. Step 3: Cross multiply
    8,605.03x = 12,908.75 × 2,763.43
  4. Step 4: Simplify right side
    8,605.03x = 35,672,413.20
  5. Step 5: Solve for x
    x = 35,672,413.20/8,605.03
  6. Step 6: Final answer
    x = 4,145.53

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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.