Home / 1,919.25-2,873.21-1,872.09

Finding the Fourth Proportional to 1,919.25, 2,873.21 and 1,872.09

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Solution

The fourth proportional to 1,919.25, 2,873.21 and 1,872.09 is: 2,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.25 : 2,873.21 = 1,872.09 : x
  2. Step 2: Convert to fraction form
    1,919.25/2,873.21 = 1,872.09/x
  3. Step 3: Cross multiply
    1,919.25x = 2,873.21 × 1,872.09
  4. Step 4: Simplify right side
    1,919.25x = 5,378,898.35
  5. Step 5: Solve for x
    x = 5,378,898.35/1,919.25
  6. Step 6: Final answer
    x = 2,802.60

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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.