Home / 2,211.45-3,291.07-2,137.64

Finding the Fourth Proportional to 2,211.45, 3,291.07 and 2,137.64

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Solution

The fourth proportional to 2,211.45, 3,291.07 and 2,137.64 is: 3,181.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.45 : 3,291.07 = 2,137.64 : x
  2. Step 2: Convert to fraction form
    2,211.45/3,291.07 = 2,137.64/x
  3. Step 3: Cross multiply
    2,211.45x = 3,291.07 × 2,137.64
  4. Step 4: Simplify right side
    2,211.45x = 7,035,134.12
  5. Step 5: Solve for x
    x = 7,035,134.12/2,211.45
  6. Step 6: Final answer
    x = 3,181.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.