Home / 3,729.61-5,146.68-2,236.78

Finding the Fourth Proportional to 3,729.61, 5,146.68 and 2,236.78

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Solution

The fourth proportional to 3,729.61, 5,146.68 and 2,236.78 is: 3,086.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.61 : 5,146.68 = 2,236.78 : x
  2. Step 2: Convert to fraction form
    3,729.61/5,146.68 = 2,236.78/x
  3. Step 3: Cross multiply
    3,729.61x = 5,146.68 × 2,236.78
  4. Step 4: Simplify right side
    3,729.61x = 11,511,990.89
  5. Step 5: Solve for x
    x = 11,511,990.89/3,729.61
  6. Step 6: Final answer
    x = 3,086.65

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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.