Home / 3,241.72-4,474.12-1,878.78

Finding the Fourth Proportional to 3,241.72, 4,474.12 and 1,878.78

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Solution

The fourth proportional to 3,241.72, 4,474.12 and 1,878.78 is: 2,593.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,241.72 : 4,474.12 = 1,878.78 : x
  2. Step 2: Convert to fraction form
    3,241.72/4,474.12 = 1,878.78/x
  3. Step 3: Cross multiply
    3,241.72x = 4,474.12 × 1,878.78
  4. Step 4: Simplify right side
    3,241.72x = 8,405,884.55
  5. Step 5: Solve for x
    x = 8,405,884.55/3,241.72
  6. Step 6: Final answer
    x = 2,593.03

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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.