Home / 2,771.54-3,821.33-1,721.78

Finding the Fourth Proportional to 2,771.54, 3,821.33 and 1,721.78

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Solution

The fourth proportional to 2,771.54, 3,821.33 and 1,721.78 is: 2,373.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.54 : 3,821.33 = 1,721.78 : x
  2. Step 2: Convert to fraction form
    2,771.54/3,821.33 = 1,721.78/x
  3. Step 3: Cross multiply
    2,771.54x = 3,821.33 × 1,721.78
  4. Step 4: Simplify right side
    2,771.54x = 6,579,490.51
  5. Step 5: Solve for x
    x = 6,579,490.51/2,771.54
  6. Step 6: Final answer
    x = 2,373.95

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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.