Home / 2,213.70-3,320.55-2,181.30

Finding the Fourth Proportional to 2,213.70, 3,320.55 and 2,181.30

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Solution

The fourth proportional to 2,213.70, 3,320.55 and 2,181.30 is: 3,271.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.70 : 3,320.55 = 2,181.30 : x
  2. Step 2: Convert to fraction form
    2,213.70/3,320.55 = 2,181.30/x
  3. Step 3: Cross multiply
    2,213.70x = 3,320.55 × 2,181.30
  4. Step 4: Simplify right side
    2,213.70x = 7,243,115.72
  5. Step 5: Solve for x
    x = 7,243,115.72/2,213.70
  6. Step 6: Final answer
    x = 3,271.95

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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.