Home / 3,723.86-5,139.84-2,152.86

Finding the Fourth Proportional to 3,723.86, 5,139.84 and 2,152.86

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Solution

The fourth proportional to 3,723.86, 5,139.84 and 2,152.86 is: 2,971.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.86 : 5,139.84 = 2,152.86 : x
  2. Step 2: Convert to fraction form
    3,723.86/5,139.84 = 2,152.86/x
  3. Step 3: Cross multiply
    3,723.86x = 5,139.84 × 2,152.86
  4. Step 4: Simplify right side
    3,723.86x = 11,065,355.94
  5. Step 5: Solve for x
    x = 11,065,355.94/3,723.86
  6. Step 6: Final answer
    x = 2,971.48

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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.