Home / 1,817.05-2,718.70-1,111.75

Finding the Fourth Proportional to 1,817.05, 2,718.70 and 1,111.75

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Solution

The fourth proportional to 1,817.05, 2,718.70 and 1,111.75 is: 1,663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.05 : 2,718.70 = 1,111.75 : x
  2. Step 2: Convert to fraction form
    1,817.05/2,718.70 = 1,111.75/x
  3. Step 3: Cross multiply
    1,817.05x = 2,718.70 × 1,111.75
  4. Step 4: Simplify right side
    1,817.05x = 3,022,514.73
  5. Step 5: Solve for x
    x = 3,022,514.73/1,817.05
  6. Step 6: Final answer
    x = 1,663.42

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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.