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Finding the Fourth Proportional to 5,398.80, 8,093.70 and 2,281.20

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Solution

The fourth proportional to 5,398.80, 8,093.70 and 2,281.20 is: 3,419.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,398.80 : 8,093.70 = 2,281.20 : x
  2. Step 2: Convert to fraction form
    5,398.80/8,093.70 = 2,281.20/x
  3. Step 3: Cross multiply
    5,398.80x = 8,093.70 × 2,281.20
  4. Step 4: Simplify right side
    5,398.80x = 18,463,348.44
  5. Step 5: Solve for x
    x = 18,463,348.44/5,398.80
  6. Step 6: Final answer
    x = 3,419.90

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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.