Home / 2,418.61-3,627.91-687.23

Finding the Fourth Proportional to 2,418.61, 3,627.91 and 687.23

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Solution

The fourth proportional to 2,418.61, 3,627.91 and 687.23 is: 1,030.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.61 : 3,627.91 = 687.23 : x
  2. Step 2: Convert to fraction form
    2,418.61/3,627.91 = 687.23/x
  3. Step 3: Cross multiply
    2,418.61x = 3,627.91 × 687.23
  4. Step 4: Simplify right side
    2,418.61x = 2,493,227.25
  5. Step 5: Solve for x
    x = 2,493,227.25/2,418.61
  6. Step 6: Final answer
    x = 1,030.85

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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.