Home / 1,997.90-2,756.97-1,101.57

Finding the Fourth Proportional to 1,997.90, 2,756.97 and 1,101.57

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Solution

The fourth proportional to 1,997.90, 2,756.97 and 1,101.57 is: 1,520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.90 : 2,756.97 = 1,101.57 : x
  2. Step 2: Convert to fraction form
    1,997.90/2,756.97 = 1,101.57/x
  3. Step 3: Cross multiply
    1,997.90x = 2,756.97 × 1,101.57
  4. Step 4: Simplify right side
    1,997.90x = 3,036,995.44
  5. Step 5: Solve for x
    x = 3,036,995.44/1,997.90
  6. Step 6: Final answer
    x = 1,520.10

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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.