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Finding the Fourth Proportional to 8,609.56, 12,915.77 and 3,061.73

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Solution

The fourth proportional to 8,609.56, 12,915.77 and 3,061.73 is: 4,593.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.56 : 12,915.77 = 3,061.73 : x
  2. Step 2: Convert to fraction form
    8,609.56/12,915.77 = 3,061.73/x
  3. Step 3: Cross multiply
    8,609.56x = 12,915.77 × 3,061.73
  4. Step 4: Simplify right side
    8,609.56x = 39,544,617.46
  5. Step 5: Solve for x
    x = 39,544,617.46/8,609.56
  6. Step 6: Final answer
    x = 4,593.11

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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.