Home / 1,874.44-2,811.79-720.19

Finding the Fourth Proportional to 1,874.44, 2,811.79 and 720.19

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Solution

The fourth proportional to 1,874.44, 2,811.79 and 720.19 is: 1,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.44 : 2,811.79 = 720.19 : x
  2. Step 2: Convert to fraction form
    1,874.44/2,811.79 = 720.19/x
  3. Step 3: Cross multiply
    1,874.44x = 2,811.79 × 720.19
  4. Step 4: Simplify right side
    1,874.44x = 2,025,023.04
  5. Step 5: Solve for x
    x = 2,025,023.04/1,874.44
  6. Step 6: Final answer
    x = 1,080.33

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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.