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Finding the Fourth Proportional to 7,224.52, 9,969.84 and 3,912.52

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Solution

The fourth proportional to 7,224.52, 9,969.84 and 3,912.52 is: 5,399.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,224.52 : 9,969.84 = 3,912.52 : x
  2. Step 2: Convert to fraction form
    7,224.52/9,969.84 = 3,912.52/x
  3. Step 3: Cross multiply
    7,224.52x = 9,969.84 × 3,912.52
  4. Step 4: Simplify right side
    7,224.52x = 39,007,198.40
  5. Step 5: Solve for x
    x = 39,007,198.40/7,224.52
  6. Step 6: Final answer
    x = 5,399.28

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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.