Home / 2,220.76-3,326.80-1,912.60

Finding the Fourth Proportional to 2,220.76, 3,326.80 and 1,912.60

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Solution

The fourth proportional to 2,220.76, 3,326.80 and 1,912.60 is: 2,865.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.76 : 3,326.80 = 1,912.60 : x
  2. Step 2: Convert to fraction form
    2,220.76/3,326.80 = 1,912.60/x
  3. Step 3: Cross multiply
    2,220.76x = 3,326.80 × 1,912.60
  4. Step 4: Simplify right side
    2,220.76x = 6,362,837.68
  5. Step 5: Solve for x
    x = 6,362,837.68/2,220.76
  6. Step 6: Final answer
    x = 2,865.16

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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.