Home / 3,120.32-4,676.55-2,729.39

Finding the Fourth Proportional to 3,120.32, 4,676.55 and 2,729.39

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Solution

The fourth proportional to 3,120.32, 4,676.55 and 2,729.39 is: 4,090.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.32 : 4,676.55 = 2,729.39 : x
  2. Step 2: Convert to fraction form
    3,120.32/4,676.55 = 2,729.39/x
  3. Step 3: Cross multiply
    3,120.32x = 4,676.55 × 2,729.39
  4. Step 4: Simplify right side
    3,120.32x = 12,764,128.80
  5. Step 5: Solve for x
    x = 12,764,128.80/3,120.32
  6. Step 6: Final answer
    x = 4,090.65

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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.