Home / 3,219.66-4,436.91-2,169.90

Finding the Fourth Proportional to 3,219.66, 4,436.91 and 2,169.90

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Solution

The fourth proportional to 3,219.66, 4,436.91 and 2,169.90 is: 2,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.66 : 4,436.91 = 2,169.90 : x
  2. Step 2: Convert to fraction form
    3,219.66/4,436.91 = 2,169.90/x
  3. Step 3: Cross multiply
    3,219.66x = 4,436.91 × 2,169.90
  4. Step 4: Simplify right side
    3,219.66x = 9,627,651.01
  5. Step 5: Solve for x
    x = 9,627,651.01/3,219.66
  6. Step 6: Final answer
    x = 2,990.27

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1.5x scale

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.