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Finding the Fourth Proportional to 2,418.37, 3,627.22 and 858.23

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Solution

The fourth proportional to 2,418.37, 3,627.22 and 858.23 is: 1,287.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.37 : 3,627.22 = 858.23 : x
  2. Step 2: Convert to fraction form
    2,418.37/3,627.22 = 858.23/x
  3. Step 3: Cross multiply
    2,418.37x = 3,627.22 × 858.23
  4. Step 4: Simplify right side
    2,418.37x = 3,112,970.88
  5. Step 5: Solve for x
    x = 3,112,970.88/2,418.37
  6. Step 6: Final answer
    x = 1,287.22

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1.5x scale

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.