Home / 3,919.17-5,874.97-1,320.69

Finding the Fourth Proportional to 3,919.17, 5,874.97 and 1,320.69

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Solution

The fourth proportional to 3,919.17, 5,874.97 and 1,320.69 is: 1,979.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.17 : 5,874.97 = 1,320.69 : x
  2. Step 2: Convert to fraction form
    3,919.17/5,874.97 = 1,320.69/x
  3. Step 3: Cross multiply
    3,919.17x = 5,874.97 × 1,320.69
  4. Step 4: Simplify right side
    3,919.17x = 7,758,978.15
  5. Step 5: Solve for x
    x = 7,758,978.15/3,919.17
  6. Step 6: Final answer
    x = 1,979.75

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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.