Home / 3,723.86-5,138.91-2,151.96

Finding the Fourth Proportional to 3,723.86, 5,138.91 and 2,151.96

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Solution

The fourth proportional to 3,723.86, 5,138.91 and 2,151.96 is: 2,969.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.86 : 5,138.91 = 2,151.96 : x
  2. Step 2: Convert to fraction form
    3,723.86/5,138.91 = 2,151.96/x
  3. Step 3: Cross multiply
    3,723.86x = 5,138.91 × 2,151.96
  4. Step 4: Simplify right side
    3,723.86x = 11,058,728.76
  5. Step 5: Solve for x
    x = 11,058,728.76/3,723.86
  6. Step 6: Final answer
    x = 2,969.70

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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.