Home / 2,215.42-3,324.05-1,120.11

Finding the Fourth Proportional to 2,215.42, 3,324.05 and 1,120.11

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Solution

The fourth proportional to 2,215.42, 3,324.05 and 1,120.11 is: 1,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.42 : 3,324.05 = 1,120.11 : x
  2. Step 2: Convert to fraction form
    2,215.42/3,324.05 = 1,120.11/x
  3. Step 3: Cross multiply
    2,215.42x = 3,324.05 × 1,120.11
  4. Step 4: Simplify right side
    2,215.42x = 3,723,279.42
  5. Step 5: Solve for x
    x = 3,723,279.42/2,215.42
  6. Step 6: Final answer
    x = 1,680.62

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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.