Home / 2,221.09-3,323.40-1,297.06

Finding the Fourth Proportional to 2,221.09, 3,323.40 and 1,297.06

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Solution

The fourth proportional to 2,221.09, 3,323.40 and 1,297.06 is: 1,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.09 : 3,323.40 = 1,297.06 : x
  2. Step 2: Convert to fraction form
    2,221.09/3,323.40 = 1,297.06/x
  3. Step 3: Cross multiply
    2,221.09x = 3,323.40 × 1,297.06
  4. Step 4: Simplify right side
    2,221.09x = 4,310,649.20
  5. Step 5: Solve for x
    x = 4,310,649.20/2,221.09
  6. Step 6: Final answer
    x = 1,940.78

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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.