Home / 2,217.88-3,059.82-1,286.20

Finding the Fourth Proportional to 2,217.88, 3,059.82 and 1,286.20

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Solution

The fourth proportional to 2,217.88, 3,059.82 and 1,286.20 is: 1,774.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.88 : 3,059.82 = 1,286.20 : x
  2. Step 2: Convert to fraction form
    2,217.88/3,059.82 = 1,286.20/x
  3. Step 3: Cross multiply
    2,217.88x = 3,059.82 × 1,286.20
  4. Step 4: Simplify right side
    2,217.88x = 3,935,540.48
  5. Step 5: Solve for x
    x = 3,935,540.48/2,217.88
  6. Step 6: Final answer
    x = 1,774.46

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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.