Home / 3,418.85-4,720.82-2,161.94

Finding the Fourth Proportional to 3,418.85, 4,720.82 and 2,161.94

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Solution

The fourth proportional to 3,418.85, 4,720.82 and 2,161.94 is: 2,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.85 : 4,720.82 = 2,161.94 : x
  2. Step 2: Convert to fraction form
    3,418.85/4,720.82 = 2,161.94/x
  3. Step 3: Cross multiply
    3,418.85x = 4,720.82 × 2,161.94
  4. Step 4: Simplify right side
    3,418.85x = 10,206,118.78
  5. Step 5: Solve for x
    x = 10,206,118.78/3,418.85
  6. Step 6: Final answer
    x = 2,985.25

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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.