Home / 3,805.74-5,251.38-2,211.90

Finding the Fourth Proportional to 3,805.74, 5,251.38 and 2,211.90

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Solution

The fourth proportional to 3,805.74, 5,251.38 and 2,211.90 is: 3,052.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.74 : 5,251.38 = 2,211.90 : x
  2. Step 2: Convert to fraction form
    3,805.74/5,251.38 = 2,211.90/x
  3. Step 3: Cross multiply
    3,805.74x = 5,251.38 × 2,211.90
  4. Step 4: Simplify right side
    3,805.74x = 11,615,527.42
  5. Step 5: Solve for x
    x = 11,615,527.42/3,805.74
  6. Step 6: Final answer
    x = 3,052.11

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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.