Home / 2,181.41-3,268.63-2,123.75

Finding the Fourth Proportional to 2,181.41, 3,268.63 and 2,123.75

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Solution

The fourth proportional to 2,181.41, 3,268.63 and 2,123.75 is: 3,182.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.41 : 3,268.63 = 2,123.75 : x
  2. Step 2: Convert to fraction form
    2,181.41/3,268.63 = 2,123.75/x
  3. Step 3: Cross multiply
    2,181.41x = 3,268.63 × 2,123.75
  4. Step 4: Simplify right side
    2,181.41x = 6,941,755.82
  5. Step 5: Solve for x
    x = 6,941,755.82/2,181.41
  6. Step 6: Final answer
    x = 3,182.23

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1.5x scale

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.