Home / 1,921.56-2,882.33-605.42

Finding the Fourth Proportional to 1,921.56, 2,882.33 and 605.42

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Solution

The fourth proportional to 1,921.56, 2,882.33 and 605.42 is: 908.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.56 : 2,882.33 = 605.42 : x
  2. Step 2: Convert to fraction form
    1,921.56/2,882.33 = 605.42/x
  3. Step 3: Cross multiply
    1,921.56x = 2,882.33 × 605.42
  4. Step 4: Simplify right side
    1,921.56x = 1,745,015.87
  5. Step 5: Solve for x
    x = 1,745,015.87/1,921.56
  6. Step 6: Final answer
    x = 908.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.