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Finding the Fourth Proportional to 7,227.63, 9,972.45 and 5,439.49

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Solution

The fourth proportional to 7,227.63, 9,972.45 and 5,439.49 is: 7,505.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,227.63 : 9,972.45 = 5,439.49 : x
  2. Step 2: Convert to fraction form
    7,227.63/9,972.45 = 5,439.49/x
  3. Step 3: Cross multiply
    7,227.63x = 9,972.45 × 5,439.49
  4. Step 4: Simplify right side
    7,227.63x = 54,245,017.12
  5. Step 5: Solve for x
    x = 54,245,017.12/7,227.63
  6. Step 6: Final answer
    x = 7,505.23

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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.