Home / 3,821.90-5,273.78-2,143.31

Finding the Fourth Proportional to 3,821.90, 5,273.78 and 2,143.31

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Solution

The fourth proportional to 3,821.90, 5,273.78 and 2,143.31 is: 2,957.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.90 : 5,273.78 = 2,143.31 : x
  2. Step 2: Convert to fraction form
    3,821.90/5,273.78 = 2,143.31/x
  3. Step 3: Cross multiply
    3,821.90x = 5,273.78 × 2,143.31
  4. Step 4: Simplify right side
    3,821.90x = 11,303,308.33
  5. Step 5: Solve for x
    x = 11,303,308.33/3,821.90
  6. Step 6: Final answer
    x = 2,957.51

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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.