Home / 3,923.43-5,414.32-2,130.90

Finding the Fourth Proportional to 3,923.43, 5,414.32 and 2,130.90

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Solution

The fourth proportional to 3,923.43, 5,414.32 and 2,130.90 is: 2,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.43 : 5,414.32 = 2,130.90 : x
  2. Step 2: Convert to fraction form
    3,923.43/5,414.32 = 2,130.90/x
  3. Step 3: Cross multiply
    3,923.43x = 5,414.32 × 2,130.90
  4. Step 4: Simplify right side
    3,923.43x = 11,537,344.86
  5. Step 5: Solve for x
    x = 11,537,344.86/3,923.43
  6. Step 6: Final answer
    x = 2,940.63

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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.