Home / 4,111.69-6,171.19-1,921.65

Finding the Fourth Proportional to 4,111.69, 6,171.19 and 1,921.65

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Solution

The fourth proportional to 4,111.69, 6,171.19 and 1,921.65 is: 2,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,111.69 : 6,171.19 = 1,921.65 : x
  2. Step 2: Convert to fraction form
    4,111.69/6,171.19 = 1,921.65/x
  3. Step 3: Cross multiply
    4,111.69x = 6,171.19 × 1,921.65
  4. Step 4: Simplify right side
    4,111.69x = 11,858,867.26
  5. Step 5: Solve for x
    x = 11,858,867.26/4,111.69
  6. Step 6: Final answer
    x = 2,884.18

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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.