Home / 3,190.62-4,401.57-2,128.11

Finding the Fourth Proportional to 3,190.62, 4,401.57 and 2,128.11

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Solution

The fourth proportional to 3,190.62, 4,401.57 and 2,128.11 is: 2,935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.62 : 4,401.57 = 2,128.11 : x
  2. Step 2: Convert to fraction form
    3,190.62/4,401.57 = 2,128.11/x
  3. Step 3: Cross multiply
    3,190.62x = 4,401.57 × 2,128.11
  4. Step 4: Simplify right side
    3,190.62x = 9,367,025.13
  5. Step 5: Solve for x
    x = 9,367,025.13/3,190.62
  6. Step 6: Final answer
    x = 2,935.80

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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.