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Finding the Fourth Proportional to 9,245.91, 12,750.98 and 7,906.55

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Solution

The fourth proportional to 9,245.91, 12,750.98 and 7,906.55 is: 10,903.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,245.91 : 12,750.98 = 7,906.55 : x
  2. Step 2: Convert to fraction form
    9,245.91/12,750.98 = 7,906.55/x
  3. Step 3: Cross multiply
    9,245.91x = 12,750.98 × 7,906.55
  4. Step 4: Simplify right side
    9,245.91x = 100,816,201.66
  5. Step 5: Solve for x
    x = 100,816,201.66/9,245.91
  6. Step 6: Final answer
    x = 10,903.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.