Home / 2,112.93-3,169.80-1,072.98

Finding the Fourth Proportional to 2,112.93, 3,169.80 and 1,072.98

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Solution

The fourth proportional to 2,112.93, 3,169.80 and 1,072.98 is: 1,609.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.93 : 3,169.80 = 1,072.98 : x
  2. Step 2: Convert to fraction form
    2,112.93/3,169.80 = 1,072.98/x
  3. Step 3: Cross multiply
    2,112.93x = 3,169.80 × 1,072.98
  4. Step 4: Simplify right side
    2,112.93x = 3,401,132.00
  5. Step 5: Solve for x
    x = 3,401,132.00/2,112.93
  6. Step 6: Final answer
    x = 1,609.68

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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.