Home / 2,213.10-3,321.70-1,118.23

Finding the Fourth Proportional to 2,213.10, 3,321.70 and 1,118.23

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Solution

The fourth proportional to 2,213.10, 3,321.70 and 1,118.23 is: 1,678.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.10 : 3,321.70 = 1,118.23 : x
  2. Step 2: Convert to fraction form
    2,213.10/3,321.70 = 1,118.23/x
  3. Step 3: Cross multiply
    2,213.10x = 3,321.70 × 1,118.23
  4. Step 4: Simplify right side
    2,213.10x = 3,714,413.49
  5. Step 5: Solve for x
    x = 3,714,413.49/2,213.10
  6. Step 6: Final answer
    x = 1,678.38

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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.