Home / 3,426.12-5,142.42-3,213.90

Finding the Fourth Proportional to 3,426.12, 5,142.42 and 3,213.90

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Solution

The fourth proportional to 3,426.12, 5,142.42 and 3,213.90 is: 4,823.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.12 : 5,142.42 = 3,213.90 : x
  2. Step 2: Convert to fraction form
    3,426.12/5,142.42 = 3,213.90/x
  3. Step 3: Cross multiply
    3,426.12x = 5,142.42 × 3,213.90
  4. Step 4: Simplify right side
    3,426.12x = 16,527,223.64
  5. Step 5: Solve for x
    x = 16,527,223.64/3,426.12
  6. Step 6: Final answer
    x = 4,823.89

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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.