Home / 3,895.25-5,375.23-2,126.81

Finding the Fourth Proportional to 3,895.25, 5,375.23 and 2,126.81

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Solution

The fourth proportional to 3,895.25, 5,375.23 and 2,126.81 is: 2,934.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.25 : 5,375.23 = 2,126.81 : x
  2. Step 2: Convert to fraction form
    3,895.25/5,375.23 = 2,126.81/x
  3. Step 3: Cross multiply
    3,895.25x = 5,375.23 × 2,126.81
  4. Step 4: Simplify right side
    3,895.25x = 11,432,082.28
  5. Step 5: Solve for x
    x = 11,432,082.28/3,895.25
  6. Step 6: Final answer
    x = 2,934.88

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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.