Home / 2,388.18-3,286.71-2,019.99

Finding the Fourth Proportional to 2,388.18, 3,286.71 and 2,019.99

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Solution

The fourth proportional to 2,388.18, 3,286.71 and 2,019.99 is: 2,779.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,388.18 : 3,286.71 = 2,019.99 : x
  2. Step 2: Convert to fraction form
    2,388.18/3,286.71 = 2,019.99/x
  3. Step 3: Cross multiply
    2,388.18x = 3,286.71 × 2,019.99
  4. Step 4: Simplify right side
    2,388.18x = 6,639,121.33
  5. Step 5: Solve for x
    x = 6,639,121.33/2,388.18
  6. Step 6: Final answer
    x = 2,779.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.