Home / 2,188.42-3,269.09-1,968.71

Finding the Fourth Proportional to 2,188.42, 3,269.09 and 1,968.71

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Solution

The fourth proportional to 2,188.42, 3,269.09 and 1,968.71 is: 2,940.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.42 : 3,269.09 = 1,968.71 : x
  2. Step 2: Convert to fraction form
    2,188.42/3,269.09 = 1,968.71/x
  3. Step 3: Cross multiply
    2,188.42x = 3,269.09 × 1,968.71
  4. Step 4: Simplify right side
    2,188.42x = 6,435,878.75
  5. Step 5: Solve for x
    x = 6,435,878.75/2,188.42
  6. Step 6: Final answer
    x = 2,940.88

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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.