Home / 3,995.20-5,988.74-1,912.15

Finding the Fourth Proportional to 3,995.20, 5,988.74 and 1,912.15

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Solution

The fourth proportional to 3,995.20, 5,988.74 and 1,912.15 is: 2,866.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.20 : 5,988.74 = 1,912.15 : x
  2. Step 2: Convert to fraction form
    3,995.20/5,988.74 = 1,912.15/x
  3. Step 3: Cross multiply
    3,995.20x = 5,988.74 × 1,912.15
  4. Step 4: Simplify right side
    3,995.20x = 11,451,359.00
  5. Step 5: Solve for x
    x = 11,451,359.00/3,995.20
  6. Step 6: Final answer
    x = 2,866.28

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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.