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Finding the Fourth Proportional to 9,361.92, 12,918.76 and 5,383.04

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Solution

The fourth proportional to 9,361.92, 12,918.76 and 5,383.04 is: 7,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,361.92 : 12,918.76 = 5,383.04 : x
  2. Step 2: Convert to fraction form
    9,361.92/12,918.76 = 5,383.04/x
  3. Step 3: Cross multiply
    9,361.92x = 12,918.76 × 5,383.04
  4. Step 4: Simplify right side
    9,361.92x = 69,542,201.83
  5. Step 5: Solve for x
    x = 69,542,201.83/9,361.92
  6. Step 6: Final answer
    x = 7,428.20

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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.