Home / 2,218.14-3,328.20-1,123.20

Finding the Fourth Proportional to 2,218.14, 3,328.20 and 1,123.20

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Solution

The fourth proportional to 2,218.14, 3,328.20 and 1,123.20 is: 1,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.14 : 3,328.20 = 1,123.20 : x
  2. Step 2: Convert to fraction form
    2,218.14/3,328.20 = 1,123.20/x
  3. Step 3: Cross multiply
    2,218.14x = 3,328.20 × 1,123.20
  4. Step 4: Simplify right side
    2,218.14x = 3,738,234.24
  5. Step 5: Solve for x
    x = 3,738,234.24/2,218.14
  6. Step 6: Final answer
    x = 1,685.30

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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.