Home / 3,723.60-5,137.80-2,231.12

Finding the Fourth Proportional to 3,723.60, 5,137.80 and 2,231.12

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Solution

The fourth proportional to 3,723.60, 5,137.80 and 2,231.12 is: 3,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.60 : 5,137.80 = 2,231.12 : x
  2. Step 2: Convert to fraction form
    3,723.60/5,137.80 = 2,231.12/x
  3. Step 3: Cross multiply
    3,723.60x = 5,137.80 × 2,231.12
  4. Step 4: Simplify right side
    3,723.60x = 11,463,048.34
  5. Step 5: Solve for x
    x = 11,463,048.34/3,723.60
  6. Step 6: Final answer
    x = 3,078.49

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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.