Home / 3,121.24-4,309.32-2,002.66

Finding the Fourth Proportional to 3,121.24, 4,309.32 and 2,002.66

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Solution

The fourth proportional to 3,121.24, 4,309.32 and 2,002.66 is: 2,764.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.24 : 4,309.32 = 2,002.66 : x
  2. Step 2: Convert to fraction form
    3,121.24/4,309.32 = 2,002.66/x
  3. Step 3: Cross multiply
    3,121.24x = 4,309.32 × 2,002.66
  4. Step 4: Simplify right side
    3,121.24x = 8,630,102.79
  5. Step 5: Solve for x
    x = 8,630,102.79/3,121.24
  6. Step 6: Final answer
    x = 2,764.96

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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.