Home / 2,540.92-3,505.20-2,191

Finding the Fourth Proportional to 2,540.92, 3,505.20 and 2,191

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Solution

The fourth proportional to 2,540.92, 3,505.20 and 2,191 is: 3,022.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.92 : 3,505.20 = 2,191 : x
  2. Step 2: Convert to fraction form
    2,540.92/3,505.20 = 2,191/x
  3. Step 3: Cross multiply
    2,540.92x = 3,505.20 × 2,191
  4. Step 4: Simplify right side
    2,540.92x = 7,679,893.20
  5. Step 5: Solve for x
    x = 7,679,893.20/2,540.92
  6. Step 6: Final answer
    x = 3,022.49

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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.