Home / 1,811.23-2,718.50-1,119.24

Finding the Fourth Proportional to 1,811.23, 2,718.50 and 1,119.24

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Solution

The fourth proportional to 1,811.23, 2,718.50 and 1,119.24 is: 1,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.23 : 2,718.50 = 1,119.24 : x
  2. Step 2: Convert to fraction form
    1,811.23/2,718.50 = 1,119.24/x
  3. Step 3: Cross multiply
    1,811.23x = 2,718.50 × 1,119.24
  4. Step 4: Simplify right side
    1,811.23x = 3,042,648.34
  5. Step 5: Solve for x
    x = 3,042,648.34/1,811.23
  6. Step 6: Final answer
    x = 1,679.88

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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.