Home / 2,207.12-3,311.16-668.24

Finding the Fourth Proportional to 2,207.12, 3,311.16 and 668.24

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Solution

The fourth proportional to 2,207.12, 3,311.16 and 668.24 is: 1,002.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.12 : 3,311.16 = 668.24 : x
  2. Step 2: Convert to fraction form
    2,207.12/3,311.16 = 668.24/x
  3. Step 3: Cross multiply
    2,207.12x = 3,311.16 × 668.24
  4. Step 4: Simplify right side
    2,207.12x = 2,212,649.56
  5. Step 5: Solve for x
    x = 2,212,649.56/2,207.12
  6. Step 6: Final answer
    x = 1,002.51

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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.