Home / 2,207.62-3,311.45-2,079.20

Finding the Fourth Proportional to 2,207.62, 3,311.45 and 2,079.20

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Solution

The fourth proportional to 2,207.62, 3,311.45 and 2,079.20 is: 3,118.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.62 : 3,311.45 = 2,079.20 : x
  2. Step 2: Convert to fraction form
    2,207.62/3,311.45 = 2,079.20/x
  3. Step 3: Cross multiply
    2,207.62x = 3,311.45 × 2,079.20
  4. Step 4: Simplify right side
    2,207.62x = 6,885,172.52
  5. Step 5: Solve for x
    x = 6,885,172.52/2,207.62
  6. Step 6: Final answer
    x = 3,118.82

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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.