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Finding the Fourth Proportional to 2,418.95, 3,627.01 and 774.65

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Solution

The fourth proportional to 2,418.95, 3,627.01 and 774.65 is: 1,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.95 : 3,627.01 = 774.65 : x
  2. Step 2: Convert to fraction form
    2,418.95/3,627.01 = 774.65/x
  3. Step 3: Cross multiply
    2,418.95x = 3,627.01 × 774.65
  4. Step 4: Simplify right side
    2,418.95x = 2,809,672.36
  5. Step 5: Solve for x
    x = 2,809,672.36/2,418.95
  6. Step 6: Final answer
    x = 1,161.52

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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.