Home / 3,072.13-4,238.34-1,891.15

Finding the Fourth Proportional to 3,072.13, 4,238.34 and 1,891.15

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Solution

The fourth proportional to 3,072.13, 4,238.34 and 1,891.15 is: 2,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.13 : 4,238.34 = 1,891.15 : x
  2. Step 2: Convert to fraction form
    3,072.13/4,238.34 = 1,891.15/x
  3. Step 3: Cross multiply
    3,072.13x = 4,238.34 × 1,891.15
  4. Step 4: Simplify right side
    3,072.13x = 8,015,336.69
  5. Step 5: Solve for x
    x = 8,015,336.69/3,072.13
  6. Step 6: Final answer
    x = 2,609.05

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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.