Home / 2,986.21-4,467.74-2,155.19

Finding the Fourth Proportional to 2,986.21, 4,467.74 and 2,155.19

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Solution

The fourth proportional to 2,986.21, 4,467.74 and 2,155.19 is: 3,224.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.21 : 4,467.74 = 2,155.19 : x
  2. Step 2: Convert to fraction form
    2,986.21/4,467.74 = 2,155.19/x
  3. Step 3: Cross multiply
    2,986.21x = 4,467.74 × 2,155.19
  4. Step 4: Simplify right side
    2,986.21x = 9,628,795.46
  5. Step 5: Solve for x
    x = 9,628,795.46/2,986.21
  6. Step 6: Final answer
    x = 3,224.42

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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.