Home / 3,418.35-4,720.13-2,161.44

Finding the Fourth Proportional to 3,418.35, 4,720.13 and 2,161.44

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Solution

The fourth proportional to 3,418.35, 4,720.13 and 2,161.44 is: 2,984.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.35 : 4,720.13 = 2,161.44 : x
  2. Step 2: Convert to fraction form
    3,418.35/4,720.13 = 2,161.44/x
  3. Step 3: Cross multiply
    3,418.35x = 4,720.13 × 2,161.44
  4. Step 4: Simplify right side
    3,418.35x = 10,202,266.98
  5. Step 5: Solve for x
    x = 10,202,266.98/3,418.35
  6. Step 6: Final answer
    x = 2,984.56

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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.