Home / 2,122.21-3,185.07-1,082.98

Finding the Fourth Proportional to 2,122.21, 3,185.07 and 1,082.98

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Solution

The fourth proportional to 2,122.21, 3,185.07 and 1,082.98 is: 1,625.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.21 : 3,185.07 = 1,082.98 : x
  2. Step 2: Convert to fraction form
    2,122.21/3,185.07 = 1,082.98/x
  3. Step 3: Cross multiply
    2,122.21x = 3,185.07 × 1,082.98
  4. Step 4: Simplify right side
    2,122.21x = 3,449,359.15
  5. Step 5: Solve for x
    x = 3,449,359.15/2,122.21
  6. Step 6: Final answer
    x = 1,625.36

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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.