Home / 2,221.17-3,328.80-1,728.19

Finding the Fourth Proportional to 2,221.17, 3,328.80 and 1,728.19

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Solution

The fourth proportional to 2,221.17, 3,328.80 and 1,728.19 is: 2,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.17 : 3,328.80 = 1,728.19 : x
  2. Step 2: Convert to fraction form
    2,221.17/3,328.80 = 1,728.19/x
  3. Step 3: Cross multiply
    2,221.17x = 3,328.80 × 1,728.19
  4. Step 4: Simplify right side
    2,221.17x = 5,752,777.83
  5. Step 5: Solve for x
    x = 5,752,777.83/2,221.17
  6. Step 6: Final answer
    x = 2,589.97

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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.