Home / 2,207.08-3,286.43-2,128.24

Finding the Fourth Proportional to 2,207.08, 3,286.43 and 2,128.24

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Solution

The fourth proportional to 2,207.08, 3,286.43 and 2,128.24 is: 3,169.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.08 : 3,286.43 = 2,128.24 : x
  2. Step 2: Convert to fraction form
    2,207.08/3,286.43 = 2,128.24/x
  3. Step 3: Cross multiply
    2,207.08x = 3,286.43 × 2,128.24
  4. Step 4: Simplify right side
    2,207.08x = 6,994,311.78
  5. Step 5: Solve for x
    x = 6,994,311.78/2,207.08
  6. Step 6: Final answer
    x = 3,169.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.