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Finding the Fourth Proportional to 9,331.44, 12,901.79 and 8,918.34

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Solution

The fourth proportional to 9,331.44, 12,901.79 and 8,918.34 is: 12,330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,331.44 : 12,901.79 = 8,918.34 : x
  2. Step 2: Convert to fraction form
    9,331.44/12,901.79 = 8,918.34/x
  3. Step 3: Cross multiply
    9,331.44x = 12,901.79 × 8,918.34
  4. Step 4: Simplify right side
    9,331.44x = 115,062,505.24
  5. Step 5: Solve for x
    x = 115,062,505.24/9,331.44
  6. Step 6: Final answer
    x = 12,330.63

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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.