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Finding the Fourth Proportional to 9,361.81, 12,936.41 and 8,906.23

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Solution

The fourth proportional to 9,361.81, 12,936.41 and 8,906.23 is: 12,306.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,361.81 : 12,936.41 = 8,906.23 : x
  2. Step 2: Convert to fraction form
    9,361.81/12,936.41 = 8,906.23/x
  3. Step 3: Cross multiply
    9,361.81x = 12,936.41 × 8,906.23
  4. Step 4: Simplify right side
    9,361.81x = 115,214,642.83
  5. Step 5: Solve for x
    x = 115,214,642.83/9,361.81
  6. Step 6: Final answer
    x = 12,306.88

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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.