Home / 1,961.68-2,707.32-1,175.80

Finding the Fourth Proportional to 1,961.68, 2,707.32 and 1,175.80

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Solution

The fourth proportional to 1,961.68, 2,707.32 and 1,175.80 is: 1,622.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.68 : 2,707.32 = 1,175.80 : x
  2. Step 2: Convert to fraction form
    1,961.68/2,707.32 = 1,175.80/x
  3. Step 3: Cross multiply
    1,961.68x = 2,707.32 × 1,175.80
  4. Step 4: Simplify right side
    1,961.68x = 3,183,266.86
  5. Step 5: Solve for x
    x = 3,183,266.86/1,961.68
  6. Step 6: Final answer
    x = 1,622.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.