Home / 3,211.55-4,436.07-2,215.05

Finding the Fourth Proportional to 3,211.55, 4,436.07 and 2,215.05

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Solution

The fourth proportional to 3,211.55, 4,436.07 and 2,215.05 is: 3,059.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.55 : 4,436.07 = 2,215.05 : x
  2. Step 2: Convert to fraction form
    3,211.55/4,436.07 = 2,215.05/x
  3. Step 3: Cross multiply
    3,211.55x = 4,436.07 × 2,215.05
  4. Step 4: Simplify right side
    3,211.55x = 9,826,091.91
  5. Step 5: Solve for x
    x = 9,826,091.91/3,211.55
  6. Step 6: Final answer
    x = 3,059.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.