Home / 1,266.38-1,747.79-1,211.03

Finding the Fourth Proportional to 1,266.38, 1,747.79 and 1,211.03

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Solution

The fourth proportional to 1,266.38, 1,747.79 and 1,211.03 is: 1,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.38 : 1,747.79 = 1,211.03 : x
  2. Step 2: Convert to fraction form
    1,266.38/1,747.79 = 1,211.03/x
  3. Step 3: Cross multiply
    1,266.38x = 1,747.79 × 1,211.03
  4. Step 4: Simplify right side
    1,266.38x = 2,116,611.33
  5. Step 5: Solve for x
    x = 2,116,611.33/1,266.38
  6. Step 6: Final answer
    x = 1,671.39

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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.