Home / 2,721.84-4,076.68-2,101

Finding the Fourth Proportional to 2,721.84, 4,076.68 and 2,101

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Solution

The fourth proportional to 2,721.84, 4,076.68 and 2,101 is: 3,146.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.84 : 4,076.68 = 2,101 : x
  2. Step 2: Convert to fraction form
    2,721.84/4,076.68 = 2,101/x
  3. Step 3: Cross multiply
    2,721.84x = 4,076.68 × 2,101
  4. Step 4: Simplify right side
    2,721.84x = 8,565,104.68
  5. Step 5: Solve for x
    x = 8,565,104.68/2,721.84
  6. Step 6: Final answer
    x = 3,146.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.