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Finding the Fourth Proportional to 8,633.41, 12,940.31 and 7,591.39

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Solution

The fourth proportional to 8,633.41, 12,940.31 and 7,591.39 is: 11,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.41 : 12,940.31 = 7,591.39 : x
  2. Step 2: Convert to fraction form
    8,633.41/12,940.31 = 7,591.39/x
  3. Step 3: Cross multiply
    8,633.41x = 12,940.31 × 7,591.39
  4. Step 4: Simplify right side
    8,633.41x = 98,234,939.93
  5. Step 5: Solve for x
    x = 98,234,939.93/8,633.41
  6. Step 6: Final answer
    x = 11,378.47

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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.