Home / 2,187.91-3,268.37-1,968.19

Finding the Fourth Proportional to 2,187.91, 3,268.37 and 1,968.19

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Solution

The fourth proportional to 2,187.91, 3,268.37 and 1,968.19 is: 2,940.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.91 : 3,268.37 = 1,968.19 : x
  2. Step 2: Convert to fraction form
    2,187.91/3,268.37 = 1,968.19/x
  3. Step 3: Cross multiply
    2,187.91x = 3,268.37 × 1,968.19
  4. Step 4: Simplify right side
    2,187.91x = 6,432,773.15
  5. Step 5: Solve for x
    x = 6,432,773.15/2,187.91
  6. Step 6: Final answer
    x = 2,940.15

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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.