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Finding the Fourth Proportional to 1,553.34, 2,144.07 and 994.14

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Solution

The fourth proportional to 1,553.34, 2,144.07 and 994.14 is: 1,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.34 : 2,144.07 = 994.14 : x
  2. Step 2: Convert to fraction form
    1,553.34/2,144.07 = 994.14/x
  3. Step 3: Cross multiply
    1,553.34x = 2,144.07 × 994.14
  4. Step 4: Simplify right side
    1,553.34x = 2,131,505.75
  5. Step 5: Solve for x
    x = 2,131,505.75/1,553.34
  6. Step 6: Final answer
    x = 1,372.21

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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.