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Finding the Fourth Proportional to 2,418.33, 3,627.76 and 774.49

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Solution

The fourth proportional to 2,418.33, 3,627.76 and 774.49 is: 1,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.33 : 3,627.76 = 774.49 : x
  2. Step 2: Convert to fraction form
    2,418.33/3,627.76 = 774.49/x
  3. Step 3: Cross multiply
    2,418.33x = 3,627.76 × 774.49
  4. Step 4: Simplify right side
    2,418.33x = 2,809,663.84
  5. Step 5: Solve for x
    x = 2,809,663.84/2,418.33
  6. Step 6: Final answer
    x = 1,161.82

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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.