Home / 1,728.45-2,591.73-1,181.25

Finding the Fourth Proportional to 1,728.45, 2,591.73 and 1,181.25

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Solution

The fourth proportional to 1,728.45, 2,591.73 and 1,181.25 is: 1,771.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.45 : 2,591.73 = 1,181.25 : x
  2. Step 2: Convert to fraction form
    1,728.45/2,591.73 = 1,181.25/x
  3. Step 3: Cross multiply
    1,728.45x = 2,591.73 × 1,181.25
  4. Step 4: Simplify right side
    1,728.45x = 3,061,481.06
  5. Step 5: Solve for x
    x = 3,061,481.06/1,728.45
  6. Step 6: Final answer
    x = 1,771.23

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1.5x scale

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.