Home / 5,408.20-8,107.40-1,944.64

Finding the Fourth Proportional to 5,408.20, 8,107.40 and 1,944.64

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Solution

The fourth proportional to 5,408.20, 8,107.40 and 1,944.64 is: 2,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.20 : 8,107.40 = 1,944.64 : x
  2. Step 2: Convert to fraction form
    5,408.20/8,107.40 = 1,944.64/x
  3. Step 3: Cross multiply
    5,408.20x = 8,107.40 × 1,944.64
  4. Step 4: Simplify right side
    5,408.20x = 15,765,974.34
  5. Step 5: Solve for x
    x = 15,765,974.34/5,408.20
  6. Step 6: Final answer
    x = 2,915.20

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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.