Home / 3,517.88-4,854.68-2,120.90

Finding the Fourth Proportional to 3,517.88, 4,854.68 and 2,120.90

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Solution

The fourth proportional to 3,517.88, 4,854.68 and 2,120.90 is: 2,926.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,517.88 : 4,854.68 = 2,120.90 : x
  2. Step 2: Convert to fraction form
    3,517.88/4,854.68 = 2,120.90/x
  3. Step 3: Cross multiply
    3,517.88x = 4,854.68 × 2,120.90
  4. Step 4: Simplify right side
    3,517.88x = 10,296,280.21
  5. Step 5: Solve for x
    x = 10,296,280.21/3,517.88
  6. Step 6: Final answer
    x = 2,926.84

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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.