Home / 3,072.16-4,238.04-1,891.36

Finding the Fourth Proportional to 3,072.16, 4,238.04 and 1,891.36

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Solution

The fourth proportional to 3,072.16, 4,238.04 and 1,891.36 is: 2,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.16 : 4,238.04 = 1,891.36 : x
  2. Step 2: Convert to fraction form
    3,072.16/4,238.04 = 1,891.36/x
  3. Step 3: Cross multiply
    3,072.16x = 4,238.04 × 1,891.36
  4. Step 4: Simplify right side
    3,072.16x = 8,015,659.33
  5. Step 5: Solve for x
    x = 8,015,659.33/3,072.16
  6. Step 6: Final answer
    x = 2,609.13

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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.