Home / 3,896.34-5,377.08-2,217.90

Finding the Fourth Proportional to 3,896.34, 5,377.08 and 2,217.90

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Solution

The fourth proportional to 3,896.34, 5,377.08 and 2,217.90 is: 3,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.34 : 5,377.08 = 2,217.90 : x
  2. Step 2: Convert to fraction form
    3,896.34/5,377.08 = 2,217.90/x
  3. Step 3: Cross multiply
    3,896.34x = 5,377.08 × 2,217.90
  4. Step 4: Simplify right side
    3,896.34x = 11,925,825.73
  5. Step 5: Solve for x
    x = 11,925,825.73/3,896.34
  6. Step 6: Final answer
    x = 3,060.78

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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.