Home / 2,119.57-3,175.39-1,890.79

Finding the Fourth Proportional to 2,119.57, 3,175.39 and 1,890.79

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Solution

The fourth proportional to 2,119.57, 3,175.39 and 1,890.79 is: 2,832.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.57 : 3,175.39 = 1,890.79 : x
  2. Step 2: Convert to fraction form
    2,119.57/3,175.39 = 1,890.79/x
  3. Step 3: Cross multiply
    2,119.57x = 3,175.39 × 1,890.79
  4. Step 4: Simplify right side
    2,119.57x = 6,003,995.66
  5. Step 5: Solve for x
    x = 6,003,995.66/2,119.57
  6. Step 6: Final answer
    x = 2,832.65

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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.