Home / 2,213.05-3,321.62-1,118.18

Finding the Fourth Proportional to 2,213.05, 3,321.62 and 1,118.18

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Solution

The fourth proportional to 2,213.05, 3,321.62 and 1,118.18 is: 1,678.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.05 : 3,321.62 = 1,118.18 : x
  2. Step 2: Convert to fraction form
    2,213.05/3,321.62 = 1,118.18/x
  3. Step 3: Cross multiply
    2,213.05x = 3,321.62 × 1,118.18
  4. Step 4: Simplify right side
    2,213.05x = 3,714,182.25
  5. Step 5: Solve for x
    x = 3,714,182.25/2,213.05
  6. Step 6: Final answer
    x = 1,678.31

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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.