Home / 3,675.80-5,072.70-1,997.30

Finding the Fourth Proportional to 3,675.80, 5,072.70 and 1,997.30

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Solution

The fourth proportional to 3,675.80, 5,072.70 and 1,997.30 is: 2,756.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,675.80 : 5,072.70 = 1,997.30 : x
  2. Step 2: Convert to fraction form
    3,675.80/5,072.70 = 1,997.30/x
  3. Step 3: Cross multiply
    3,675.80x = 5,072.70 × 1,997.30
  4. Step 4: Simplify right side
    3,675.80x = 10,131,708.90
  5. Step 5: Solve for x
    x = 10,131,708.90/3,675.80
  6. Step 6: Final answer
    x = 2,756.33

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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.