Home / 3,721.78-5,135.73-2,043.18

Finding the Fourth Proportional to 3,721.78, 5,135.73 and 2,043.18

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Solution

The fourth proportional to 3,721.78, 5,135.73 and 2,043.18 is: 2,819.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.78 : 5,135.73 = 2,043.18 : x
  2. Step 2: Convert to fraction form
    3,721.78/5,135.73 = 2,043.18/x
  3. Step 3: Cross multiply
    3,721.78x = 5,135.73 × 2,043.18
  4. Step 4: Simplify right side
    3,721.78x = 10,493,225.93
  5. Step 5: Solve for x
    x = 10,493,225.93/3,721.78
  6. Step 6: Final answer
    x = 2,819.41

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1.5x scale

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.