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Finding the Fourth Proportional to 8,407.45, 12,611.90 and 2,167.41

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Solution

The fourth proportional to 8,407.45, 12,611.90 and 2,167.41 is: 3,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407.45 : 12,611.90 = 2,167.41 : x
  2. Step 2: Convert to fraction form
    8,407.45/12,611.90 = 2,167.41/x
  3. Step 3: Cross multiply
    8,407.45x = 12,611.90 × 2,167.41
  4. Step 4: Simplify right side
    8,407.45x = 27,335,133.09
  5. Step 5: Solve for x
    x = 27,335,133.09/8,407.45
  6. Step 6: Final answer
    x = 3,251.30

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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.