Home / 2,121.12-3,180.06-1,350

Finding the Fourth Proportional to 2,121.12, 3,180.06 and 1,350

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Solution

The fourth proportional to 2,121.12, 3,180.06 and 1,350 is: 2,023.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.12 : 3,180.06 = 1,350 : x
  2. Step 2: Convert to fraction form
    2,121.12/3,180.06 = 1,350/x
  3. Step 3: Cross multiply
    2,121.12x = 3,180.06 × 1,350
  4. Step 4: Simplify right side
    2,121.12x = 4,293,081
  5. Step 5: Solve for x
    x = 4,293,081/2,121.12
  6. Step 6: Final answer
    x = 2,023.97

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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.