Home / 1,961.36-2,943.12-1,181.60

Finding the Fourth Proportional to 1,961.36, 2,943.12 and 1,181.60

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Solution

The fourth proportional to 1,961.36, 2,943.12 and 1,181.60 is: 1,773.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.36 : 2,943.12 = 1,181.60 : x
  2. Step 2: Convert to fraction form
    1,961.36/2,943.12 = 1,181.60/x
  3. Step 3: Cross multiply
    1,961.36x = 2,943.12 × 1,181.60
  4. Step 4: Simplify right side
    1,961.36x = 3,477,590.59
  5. Step 5: Solve for x
    x = 3,477,590.59/1,961.36
  6. Step 6: Final answer
    x = 1,773.05

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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.