Home / 5,515.29-8,269.29-2,181.33

Finding the Fourth Proportional to 5,515.29, 8,269.29 and 2,181.33

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Solution

The fourth proportional to 5,515.29, 8,269.29 and 2,181.33 is: 3,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.29 : 8,269.29 = 2,181.33 : x
  2. Step 2: Convert to fraction form
    5,515.29/8,269.29 = 2,181.33/x
  3. Step 3: Cross multiply
    5,515.29x = 8,269.29 × 2,181.33
  4. Step 4: Simplify right side
    5,515.29x = 18,038,050.36
  5. Step 5: Solve for x
    x = 18,038,050.36/5,515.29
  6. Step 6: Final answer
    x = 3,270.55

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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.