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Finding the Fourth Proportional to 3,138.56, 4,331.28 and 1,741.44

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Solution

The fourth proportional to 3,138.56, 4,331.28 and 1,741.44 is: 2,403.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.56 : 4,331.28 = 1,741.44 : x
  2. Step 2: Convert to fraction form
    3,138.56/4,331.28 = 1,741.44/x
  3. Step 3: Cross multiply
    3,138.56x = 4,331.28 × 1,741.44
  4. Step 4: Simplify right side
    3,138.56x = 7,542,664.24
  5. Step 5: Solve for x
    x = 7,542,664.24/3,138.56
  6. Step 6: Final answer
    x = 2,403.22

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1.5x scale

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.