Home / 1,633.36-2,450.31-811.66

Finding the Fourth Proportional to 1,633.36, 2,450.31 and 811.66

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Solution

The fourth proportional to 1,633.36, 2,450.31 and 811.66 is: 1,217.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,633.36 : 2,450.31 = 811.66 : x
  2. Step 2: Convert to fraction form
    1,633.36/2,450.31 = 811.66/x
  3. Step 3: Cross multiply
    1,633.36x = 2,450.31 × 811.66
  4. Step 4: Simplify right side
    1,633.36x = 1,988,818.61
  5. Step 5: Solve for x
    x = 1,988,818.61/1,633.36
  6. Step 6: Final answer
    x = 1,217.62

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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.