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Finding the Fourth Proportional to 5,472.40, 8,218.20 and 5,299.60

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Solution

The fourth proportional to 5,472.40, 8,218.20 and 5,299.60 is: 7,958.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,472.40 : 8,218.20 = 5,299.60 : x
  2. Step 2: Convert to fraction form
    5,472.40/8,218.20 = 5,299.60/x
  3. Step 3: Cross multiply
    5,472.40x = 8,218.20 × 5,299.60
  4. Step 4: Simplify right side
    5,472.40x = 43,553,172.72
  5. Step 5: Solve for x
    x = 43,553,172.72/5,472.40
  6. Step 6: Final answer
    x = 7,958.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.