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Finding the Fourth Proportional to 3,404.56, 4,697.72 and 1,912.44

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Solution

The fourth proportional to 3,404.56, 4,697.72 and 1,912.44 is: 2,638.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.56 : 4,697.72 = 1,912.44 : x
  2. Step 2: Convert to fraction form
    3,404.56/4,697.72 = 1,912.44/x
  3. Step 3: Cross multiply
    3,404.56x = 4,697.72 × 1,912.44
  4. Step 4: Simplify right side
    3,404.56x = 8,984,107.64
  5. Step 5: Solve for x
    x = 8,984,107.64/3,404.56
  6. Step 6: Final answer
    x = 2,638.85

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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.