Home / 3,414.21-4,711.76-1,921.96

Finding the Fourth Proportional to 3,414.21, 4,711.76 and 1,921.96

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Solution

The fourth proportional to 3,414.21, 4,711.76 and 1,921.96 is: 2,652.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,414.21 : 4,711.76 = 1,921.96 : x
  2. Step 2: Convert to fraction form
    3,414.21/4,711.76 = 1,921.96/x
  3. Step 3: Cross multiply
    3,414.21x = 4,711.76 × 1,921.96
  4. Step 4: Simplify right side
    3,414.21x = 9,055,814.25
  5. Step 5: Solve for x
    x = 9,055,814.25/3,414.21
  6. Step 6: Final answer
    x = 2,652.39

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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.