Home / 3,785.16-5,672.96-2,689.78

Finding the Fourth Proportional to 3,785.16, 5,672.96 and 2,689.78

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Solution

The fourth proportional to 3,785.16, 5,672.96 and 2,689.78 is: 4,031.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.16 : 5,672.96 = 2,689.78 : x
  2. Step 2: Convert to fraction form
    3,785.16/5,672.96 = 2,689.78/x
  3. Step 3: Cross multiply
    3,785.16x = 5,672.96 × 2,689.78
  4. Step 4: Simplify right side
    3,785.16x = 15,259,014.35
  5. Step 5: Solve for x
    x = 15,259,014.35/3,785.16
  6. Step 6: Final answer
    x = 4,031.27

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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.