Home / 1,634.58-2,450.16-811.80

Finding the Fourth Proportional to 1,634.58, 2,450.16 and 811.80

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Solution

The fourth proportional to 1,634.58, 2,450.16 and 811.80 is: 1,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.58 : 2,450.16 = 811.80 : x
  2. Step 2: Convert to fraction form
    1,634.58/2,450.16 = 811.80/x
  3. Step 3: Cross multiply
    1,634.58x = 2,450.16 × 811.80
  4. Step 4: Simplify right side
    1,634.58x = 1,989,039.89
  5. Step 5: Solve for x
    x = 1,989,039.89/1,634.58
  6. Step 6: Final answer
    x = 1,216.85

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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.