Home / 4,086.24-5,638.80-2,223.20

Finding the Fourth Proportional to 4,086.24, 5,638.80 and 2,223.20

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Solution

The fourth proportional to 4,086.24, 5,638.80 and 2,223.20 is: 3,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.24 : 5,638.80 = 2,223.20 : x
  2. Step 2: Convert to fraction form
    4,086.24/5,638.80 = 2,223.20/x
  3. Step 3: Cross multiply
    4,086.24x = 5,638.80 × 2,223.20
  4. Step 4: Simplify right side
    4,086.24x = 12,536,180.16
  5. Step 5: Solve for x
    x = 12,536,180.16/4,086.24
  6. Step 6: Final answer
    x = 3,067.90

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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.