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Finding the Fourth Proportional to 8,611.62, 12,919.62 and 2,455.62

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Solution

The fourth proportional to 8,611.62, 12,919.62 and 2,455.62 is: 3,684.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.62 : 12,919.62 = 2,455.62 : x
  2. Step 2: Convert to fraction form
    8,611.62/12,919.62 = 2,455.62/x
  3. Step 3: Cross multiply
    8,611.62x = 12,919.62 × 2,455.62
  4. Step 4: Simplify right side
    8,611.62x = 31,725,677.26
  5. Step 5: Solve for x
    x = 31,725,677.26/8,611.62
  6. Step 6: Final answer
    x = 3,684.05

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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.