Home / 3,218.74-4,443.87-2,471.21

Finding the Fourth Proportional to 3,218.74, 4,443.87 and 2,471.21

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Solution

The fourth proportional to 3,218.74, 4,443.87 and 2,471.21 is: 3,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.74 : 4,443.87 = 2,471.21 : x
  2. Step 2: Convert to fraction form
    3,218.74/4,443.87 = 2,471.21/x
  3. Step 3: Cross multiply
    3,218.74x = 4,443.87 × 2,471.21
  4. Step 4: Simplify right side
    3,218.74x = 10,981,735.98
  5. Step 5: Solve for x
    x = 10,981,735.98/3,218.74
  6. Step 6: Final answer
    x = 3,411.81

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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.