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Finding the Fourth Proportional to 8,616.33, 12,819.60 and 8,587.17

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Solution

The fourth proportional to 8,616.33, 12,819.60 and 8,587.17 is: 12,776.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.33 : 12,819.60 = 8,587.17 : x
  2. Step 2: Convert to fraction form
    8,616.33/12,819.60 = 8,587.17/x
  3. Step 3: Cross multiply
    8,616.33x = 12,819.60 × 8,587.17
  4. Step 4: Simplify right side
    8,616.33x = 110,084,084.53
  5. Step 5: Solve for x
    x = 110,084,084.53/8,616.33
  6. Step 6: Final answer
    x = 12,776.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.