Home / 3,822.90-5,275.15-2,144.31

Finding the Fourth Proportional to 3,822.90, 5,275.15 and 2,144.31

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Solution

The fourth proportional to 3,822.90, 5,275.15 and 2,144.31 is: 2,958.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,822.90 : 5,275.15 = 2,144.31 : x
  2. Step 2: Convert to fraction form
    3,822.90/5,275.15 = 2,144.31/x
  3. Step 3: Cross multiply
    3,822.90x = 5,275.15 × 2,144.31
  4. Step 4: Simplify right side
    3,822.90x = 11,311,556.90
  5. Step 5: Solve for x
    x = 11,311,556.90/3,822.90
  6. Step 6: Final answer
    x = 2,958.89

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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.