Home / 3,919.76-5,414.64-3,045.68

Finding the Fourth Proportional to 3,919.76, 5,414.64 and 3,045.68

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Solution

The fourth proportional to 3,919.76, 5,414.64 and 3,045.68 is: 4,207.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.76 : 5,414.64 = 3,045.68 : x
  2. Step 2: Convert to fraction form
    3,919.76/5,414.64 = 3,045.68/x
  3. Step 3: Cross multiply
    3,919.76x = 5,414.64 × 3,045.68
  4. Step 4: Simplify right side
    3,919.76x = 16,491,260.76
  5. Step 5: Solve for x
    x = 16,491,260.76/3,919.76
  6. Step 6: Final answer
    x = 4,207.21

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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.