Home / 1,997.19-2,756.43-1,211.49

Finding the Fourth Proportional to 1,997.19, 2,756.43 and 1,211.49

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Solution

The fourth proportional to 1,997.19, 2,756.43 and 1,211.49 is: 1,672.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.19 : 2,756.43 = 1,211.49 : x
  2. Step 2: Convert to fraction form
    1,997.19/2,756.43 = 1,211.49/x
  3. Step 3: Cross multiply
    1,997.19x = 2,756.43 × 1,211.49
  4. Step 4: Simplify right side
    1,997.19x = 3,339,387.38
  5. Step 5: Solve for x
    x = 3,339,387.38/1,997.19
  6. Step 6: Final answer
    x = 1,672.04

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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.