Home / 3,919.86-5,880.09-1,146.47

Finding the Fourth Proportional to 3,919.86, 5,880.09 and 1,146.47

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Solution

The fourth proportional to 3,919.86, 5,880.09 and 1,146.47 is: 1,719.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.86 : 5,880.09 = 1,146.47 : x
  2. Step 2: Convert to fraction form
    3,919.86/5,880.09 = 1,146.47/x
  3. Step 3: Cross multiply
    3,919.86x = 5,880.09 × 1,146.47
  4. Step 4: Simplify right side
    3,919.86x = 6,741,317.38
  5. Step 5: Solve for x
    x = 6,741,317.38/3,919.86
  6. Step 6: Final answer
    x = 1,719.79

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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.