Home / 3,721.29-5,135.47-2,106.07

Finding the Fourth Proportional to 3,721.29, 5,135.47 and 2,106.07

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Solution

The fourth proportional to 3,721.29, 5,135.47 and 2,106.07 is: 2,906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.29 : 5,135.47 = 2,106.07 : x
  2. Step 2: Convert to fraction form
    3,721.29/5,135.47 = 2,106.07/x
  3. Step 3: Cross multiply
    3,721.29x = 5,135.47 × 2,106.07
  4. Step 4: Simplify right side
    3,721.29x = 10,815,648.77
  5. Step 5: Solve for x
    x = 10,815,648.77/3,721.29
  6. Step 6: Final answer
    x = 2,906.42

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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.