Home / 2,116.41-3,175.38-1,128.19

Finding the Fourth Proportional to 2,116.41, 3,175.38 and 1,128.19

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Solution

The fourth proportional to 2,116.41, 3,175.38 and 1,128.19 is: 1,692.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.41 : 3,175.38 = 1,128.19 : x
  2. Step 2: Convert to fraction form
    2,116.41/3,175.38 = 1,128.19/x
  3. Step 3: Cross multiply
    2,116.41x = 3,175.38 × 1,128.19
  4. Step 4: Simplify right side
    2,116.41x = 3,582,416.09
  5. Step 5: Solve for x
    x = 3,582,416.09/2,116.41
  6. Step 6: Final answer
    x = 1,692.69

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.