Home / 3,520.42-5,280.02-2,142.62

Finding the Fourth Proportional to 3,520.42, 5,280.02 and 2,142.62

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Solution

The fourth proportional to 3,520.42, 5,280.02 and 2,142.62 is: 3,213.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.42 : 5,280.02 = 2,142.62 : x
  2. Step 2: Convert to fraction form
    3,520.42/5,280.02 = 2,142.62/x
  3. Step 3: Cross multiply
    3,520.42x = 5,280.02 × 2,142.62
  4. Step 4: Simplify right side
    3,520.42x = 11,313,076.45
  5. Step 5: Solve for x
    x = 11,313,076.45/3,520.42
  6. Step 6: Final answer
    x = 3,213.56

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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.