Home / 3,674.21-5,512.15-1,209.05

Finding the Fourth Proportional to 3,674.21, 5,512.15 and 1,209.05

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Solution

The fourth proportional to 3,674.21, 5,512.15 and 1,209.05 is: 1,813.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,674.21 : 5,512.15 = 1,209.05 : x
  2. Step 2: Convert to fraction form
    3,674.21/5,512.15 = 1,209.05/x
  3. Step 3: Cross multiply
    3,674.21x = 5,512.15 × 1,209.05
  4. Step 4: Simplify right side
    3,674.21x = 6,664,452.78
  5. Step 5: Solve for x
    x = 6,664,452.78/3,674.21
  6. Step 6: Final answer
    x = 1,813.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.