Home / 2,138.06-3,202.75-1,211.68

Finding the Fourth Proportional to 2,138.06, 3,202.75 and 1,211.68

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Solution

The fourth proportional to 2,138.06, 3,202.75 and 1,211.68 is: 1,815.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.06 : 3,202.75 = 1,211.68 : x
  2. Step 2: Convert to fraction form
    2,138.06/3,202.75 = 1,211.68/x
  3. Step 3: Cross multiply
    2,138.06x = 3,202.75 × 1,211.68
  4. Step 4: Simplify right side
    2,138.06x = 3,880,708.12
  5. Step 5: Solve for x
    x = 3,880,708.12/2,138.06
  6. Step 6: Final answer
    x = 1,815.06

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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.