Home / 5,618.21-8,428.39-2,155.19

Finding the Fourth Proportional to 5,618.21, 8,428.39 and 2,155.19

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Solution

The fourth proportional to 5,618.21, 8,428.39 and 2,155.19 is: 3,233.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.21 : 8,428.39 = 2,155.19 : x
  2. Step 2: Convert to fraction form
    5,618.21/8,428.39 = 2,155.19/x
  3. Step 3: Cross multiply
    5,618.21x = 8,428.39 × 2,155.19
  4. Step 4: Simplify right side
    5,618.21x = 18,164,781.84
  5. Step 5: Solve for x
    x = 18,164,781.84/5,618.21
  6. Step 6: Final answer
    x = 3,233.20

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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.