Home / 1,645.03-2,467.58-919.23

Finding the Fourth Proportional to 1,645.03, 2,467.58 and 919.23

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Solution

The fourth proportional to 1,645.03, 2,467.58 and 919.23 is: 1,378.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.03 : 2,467.58 = 919.23 : x
  2. Step 2: Convert to fraction form
    1,645.03/2,467.58 = 919.23/x
  3. Step 3: Cross multiply
    1,645.03x = 2,467.58 × 919.23
  4. Step 4: Simplify right side
    1,645.03x = 2,268,273.56
  5. Step 5: Solve for x
    x = 2,268,273.56/1,645.03
  6. Step 6: Final answer
    x = 1,378.86

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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.