Home / 3,765.21-5,640.52-1,818.78

Finding the Fourth Proportional to 3,765.21, 5,640.52 and 1,818.78

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Solution

The fourth proportional to 3,765.21, 5,640.52 and 1,818.78 is: 2,724.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.21 : 5,640.52 = 1,818.78 : x
  2. Step 2: Convert to fraction form
    3,765.21/5,640.52 = 1,818.78/x
  3. Step 3: Cross multiply
    3,765.21x = 5,640.52 × 1,818.78
  4. Step 4: Simplify right side
    3,765.21x = 10,258,864.97
  5. Step 5: Solve for x
    x = 10,258,864.97/3,765.21
  6. Step 6: Final answer
    x = 2,724.65

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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.