Home / 3,923.33-5,414.21-2,130.81

Finding the Fourth Proportional to 3,923.33, 5,414.21 and 2,130.81

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Solution

The fourth proportional to 3,923.33, 5,414.21 and 2,130.81 is: 2,940.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.33 : 5,414.21 = 2,130.81 : x
  2. Step 2: Convert to fraction form
    3,923.33/5,414.21 = 2,130.81/x
  3. Step 3: Cross multiply
    3,923.33x = 5,414.21 × 2,130.81
  4. Step 4: Simplify right side
    3,923.33x = 11,536,652.81
  5. Step 5: Solve for x
    x = 11,536,652.81/3,923.33
  6. Step 6: Final answer
    x = 2,940.53

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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.