Home / 3,168.42-4,369.59-1,989.60

Finding the Fourth Proportional to 3,168.42, 4,369.59 and 1,989.60

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Solution

The fourth proportional to 3,168.42, 4,369.59 and 1,989.60 is: 2,743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.42 : 4,369.59 = 1,989.60 : x
  2. Step 2: Convert to fraction form
    3,168.42/4,369.59 = 1,989.60/x
  3. Step 3: Cross multiply
    3,168.42x = 4,369.59 × 1,989.60
  4. Step 4: Simplify right side
    3,168.42x = 8,693,736.26
  5. Step 5: Solve for x
    x = 8,693,736.26/3,168.42
  6. Step 6: Final answer
    x = 2,743.87

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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.