Home / 3,138.47-4,331.09-1,741.22

Finding the Fourth Proportional to 3,138.47, 4,331.09 and 1,741.22

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Solution

The fourth proportional to 3,138.47, 4,331.09 and 1,741.22 is: 2,402.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.47 : 4,331.09 = 1,741.22 : x
  2. Step 2: Convert to fraction form
    3,138.47/4,331.09 = 1,741.22/x
  3. Step 3: Cross multiply
    3,138.47x = 4,331.09 × 1,741.22
  4. Step 4: Simplify right side
    3,138.47x = 7,541,382.65
  5. Step 5: Solve for x
    x = 7,541,382.65/3,138.47
  6. Step 6: Final answer
    x = 2,402.88

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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.