Home / 3,168.38-4,367.79-2,172.08

Finding the Fourth Proportional to 3,168.38, 4,367.79 and 2,172.08

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Solution

The fourth proportional to 3,168.38, 4,367.79 and 2,172.08 is: 2,994.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.38 : 4,367.79 = 2,172.08 : x
  2. Step 2: Convert to fraction form
    3,168.38/4,367.79 = 2,172.08/x
  3. Step 3: Cross multiply
    3,168.38x = 4,367.79 × 2,172.08
  4. Step 4: Simplify right side
    3,168.38x = 9,487,189.30
  5. Step 5: Solve for x
    x = 9,487,189.30/3,168.38
  6. Step 6: Final answer
    x = 2,994.33

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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.