Home / 3,418.20-4,716.78-2,020.68

Finding the Fourth Proportional to 3,418.20, 4,716.78 and 2,020.68

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Solution

The fourth proportional to 3,418.20, 4,716.78 and 2,020.68 is: 2,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.20 : 4,716.78 = 2,020.68 : x
  2. Step 2: Convert to fraction form
    3,418.20/4,716.78 = 2,020.68/x
  3. Step 3: Cross multiply
    3,418.20x = 4,716.78 × 2,020.68
  4. Step 4: Simplify right side
    3,418.20x = 9,531,103.01
  5. Step 5: Solve for x
    x = 9,531,103.01/3,418.20
  6. Step 6: Final answer
    x = 2,788.34

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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.