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Finding the Fourth Proportional to 8,608.67, 12,912.60 and 3,410.90

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Solution

The fourth proportional to 8,608.67, 12,912.60 and 3,410.90 is: 5,116.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.67 : 12,912.60 = 3,410.90 : x
  2. Step 2: Convert to fraction form
    8,608.67/12,912.60 = 3,410.90/x
  3. Step 3: Cross multiply
    8,608.67x = 12,912.60 × 3,410.90
  4. Step 4: Simplify right side
    8,608.67x = 44,043,587.34
  5. Step 5: Solve for x
    x = 44,043,587.34/8,608.67
  6. Step 6: Final answer
    x = 5,116.19

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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.