Home / 2,661.95-3,986.96-2,072.36

Finding the Fourth Proportional to 2,661.95, 3,986.96 and 2,072.36

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Solution

The fourth proportional to 2,661.95, 3,986.96 and 2,072.36 is: 3,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.95 : 3,986.96 = 2,072.36 : x
  2. Step 2: Convert to fraction form
    2,661.95/3,986.96 = 2,072.36/x
  3. Step 3: Cross multiply
    2,661.95x = 3,986.96 × 2,072.36
  4. Step 4: Simplify right side
    2,661.95x = 8,262,416.43
  5. Step 5: Solve for x
    x = 8,262,416.43/2,661.95
  6. Step 6: Final answer
    x = 3,103.90

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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.