Home / 2,231.01-3,078.54-1,236.20

Finding the Fourth Proportional to 2,231.01, 3,078.54 and 1,236.20

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Solution

The fourth proportional to 2,231.01, 3,078.54 and 1,236.20 is: 1,705.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.01 : 3,078.54 = 1,236.20 : x
  2. Step 2: Convert to fraction form
    2,231.01/3,078.54 = 1,236.20/x
  3. Step 3: Cross multiply
    2,231.01x = 3,078.54 × 1,236.20
  4. Step 4: Simplify right side
    2,231.01x = 3,805,675.76
  5. Step 5: Solve for x
    x = 3,805,675.76/2,231.01
  6. Step 6: Final answer
    x = 1,705.81

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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.