Home / 2,190.27-3,022.40-1,245.99

Finding the Fourth Proportional to 2,190.27, 3,022.40 and 1,245.99

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Solution

The fourth proportional to 2,190.27, 3,022.40 and 1,245.99 is: 1,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.27 : 3,022.40 = 1,245.99 : x
  2. Step 2: Convert to fraction form
    2,190.27/3,022.40 = 1,245.99/x
  3. Step 3: Cross multiply
    2,190.27x = 3,022.40 × 1,245.99
  4. Step 4: Simplify right side
    2,190.27x = 3,765,873.95
  5. Step 5: Solve for x
    x = 3,765,873.95/2,190.27
  6. Step 6: Final answer
    x = 1,719.37

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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.