Home / 2,116.18-3,175.08-818.56

Finding the Fourth Proportional to 2,116.18, 3,175.08 and 818.56

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Solution

The fourth proportional to 2,116.18, 3,175.08 and 818.56 is: 1,228.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.18 : 3,175.08 = 818.56 : x
  2. Step 2: Convert to fraction form
    2,116.18/3,175.08 = 818.56/x
  3. Step 3: Cross multiply
    2,116.18x = 3,175.08 × 818.56
  4. Step 4: Simplify right side
    2,116.18x = 2,598,993.48
  5. Step 5: Solve for x
    x = 2,598,993.48/2,116.18
  6. Step 6: Final answer
    x = 1,228.15

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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.