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Finding the Fourth Proportional to 8,445.22, 12,659.63 and 5,672.66

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Solution

The fourth proportional to 8,445.22, 12,659.63 and 5,672.66 is: 8,503.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.22 : 12,659.63 = 5,672.66 : x
  2. Step 2: Convert to fraction form
    8,445.22/12,659.63 = 5,672.66/x
  3. Step 3: Cross multiply
    8,445.22x = 12,659.63 × 5,672.66
  4. Step 4: Simplify right side
    8,445.22x = 71,813,685.05
  5. Step 5: Solve for x
    x = 71,813,685.05/8,445.22
  6. Step 6: Final answer
    x = 8,503.47

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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.