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Finding the Fourth Proportional to 5,414.80, 8,115.80 and 2,294.80

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Solution

The fourth proportional to 5,414.80, 8,115.80 and 2,294.80 is: 3,439.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.80 : 8,115.80 = 2,294.80 : x
  2. Step 2: Convert to fraction form
    5,414.80/8,115.80 = 2,294.80/x
  3. Step 3: Cross multiply
    5,414.80x = 8,115.80 × 2,294.80
  4. Step 4: Simplify right side
    5,414.80x = 18,624,137.84
  5. Step 5: Solve for x
    x = 18,624,137.84/5,414.80
  6. Step 6: Final answer
    x = 3,439.49

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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.