Home / 2,143.42-3,213.26-1,217.66

Finding the Fourth Proportional to 2,143.42, 3,213.26 and 1,217.66

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Solution

The fourth proportional to 2,143.42, 3,213.26 and 1,217.66 is: 1,825.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.42 : 3,213.26 = 1,217.66 : x
  2. Step 2: Convert to fraction form
    2,143.42/3,213.26 = 1,217.66/x
  3. Step 3: Cross multiply
    2,143.42x = 3,213.26 × 1,217.66
  4. Step 4: Simplify right side
    2,143.42x = 3,912,658.17
  5. Step 5: Solve for x
    x = 3,912,658.17/2,143.42
  6. Step 6: Final answer
    x = 1,825.43

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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.