Home / 2,121.36-3,180.68-1,023.54

Finding the Fourth Proportional to 2,121.36, 3,180.68 and 1,023.54

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Solution

The fourth proportional to 2,121.36, 3,180.68 and 1,023.54 is: 1,534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.36 : 3,180.68 = 1,023.54 : x
  2. Step 2: Convert to fraction form
    2,121.36/3,180.68 = 1,023.54/x
  3. Step 3: Cross multiply
    2,121.36x = 3,180.68 × 1,023.54
  4. Step 4: Simplify right side
    2,121.36x = 3,255,553.21
  5. Step 5: Solve for x
    x = 3,255,553.21/2,121.36
  6. Step 6: Final answer
    x = 1,534.65

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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.