Home / 2,712.32-3,738.87-2,121.83

Finding the Fourth Proportional to 2,712.32, 3,738.87 and 2,121.83

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Solution

The fourth proportional to 2,712.32, 3,738.87 and 2,121.83 is: 2,924.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.32 : 3,738.87 = 2,121.83 : x
  2. Step 2: Convert to fraction form
    2,712.32/3,738.87 = 2,121.83/x
  3. Step 3: Cross multiply
    2,712.32x = 3,738.87 × 2,121.83
  4. Step 4: Simplify right side
    2,712.32x = 7,933,227.84
  5. Step 5: Solve for x
    x = 7,933,227.84/2,712.32
  6. Step 6: Final answer
    x = 2,924.89

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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.