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Finding the Fourth Proportional to 2,679.62, 4,019.42 and 2,555.06

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Solution

The fourth proportional to 2,679.62, 4,019.42 and 2,555.06 is: 3,832.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.62 : 4,019.42 = 2,555.06 : x
  2. Step 2: Convert to fraction form
    2,679.62/4,019.42 = 2,555.06/x
  3. Step 3: Cross multiply
    2,679.62x = 4,019.42 × 2,555.06
  4. Step 4: Simplify right side
    2,679.62x = 10,269,845.56
  5. Step 5: Solve for x
    x = 10,269,845.56/2,679.62
  6. Step 6: Final answer
    x = 3,832.58

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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.