Home / 5,618.27-8,428.49-2,155.25

Finding the Fourth Proportional to 5,618.27, 8,428.49 and 2,155.25

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Solution

The fourth proportional to 5,618.27, 8,428.49 and 2,155.25 is: 3,233.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.27 : 8,428.49 = 2,155.25 : x
  2. Step 2: Convert to fraction form
    5,618.27/8,428.49 = 2,155.25/x
  3. Step 3: Cross multiply
    5,618.27x = 8,428.49 × 2,155.25
  4. Step 4: Simplify right side
    5,618.27x = 18,165,503.07
  5. Step 5: Solve for x
    x = 18,165,503.07/5,618.27
  6. Step 6: Final answer
    x = 3,233.29

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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.