Home / 4,189.23-6,274.71-1,991.28

Finding the Fourth Proportional to 4,189.23, 6,274.71 and 1,991.28

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Solution

The fourth proportional to 4,189.23, 6,274.71 and 1,991.28 is: 2,982.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.23 : 6,274.71 = 1,991.28 : x
  2. Step 2: Convert to fraction form
    4,189.23/6,274.71 = 1,991.28/x
  3. Step 3: Cross multiply
    4,189.23x = 6,274.71 × 1,991.28
  4. Step 4: Simplify right side
    4,189.23x = 12,494,704.53
  5. Step 5: Solve for x
    x = 12,494,704.53/4,189.23
  6. Step 6: Final answer
    x = 2,982.58

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1.5x scale

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.