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Finding the Fourth Proportional to 8,605.49, 12,908.24 and 2,766.20

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Solution

The fourth proportional to 8,605.49, 12,908.24 and 2,766.20 is: 4,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.49 : 12,908.24 = 2,766.20 : x
  2. Step 2: Convert to fraction form
    8,605.49/12,908.24 = 2,766.20/x
  3. Step 3: Cross multiply
    8,605.49x = 12,908.24 × 2,766.20
  4. Step 4: Simplify right side
    8,605.49x = 35,706,802.30
  5. Step 5: Solve for x
    x = 35,706,802.30/8,605.49
  6. Step 6: Final answer
    x = 4,149.30

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1.5x scale

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.