Home / 3,891.75-5,370.73-2,213.05

Finding the Fourth Proportional to 3,891.75, 5,370.73 and 2,213.05

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Solution

The fourth proportional to 3,891.75, 5,370.73 and 2,213.05 is: 3,054.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.75 : 5,370.73 = 2,213.05 : x
  2. Step 2: Convert to fraction form
    3,891.75/5,370.73 = 2,213.05/x
  3. Step 3: Cross multiply
    3,891.75x = 5,370.73 × 2,213.05
  4. Step 4: Simplify right side
    3,891.75x = 11,885,693.64
  5. Step 5: Solve for x
    x = 11,885,693.64/3,891.75
  6. Step 6: Final answer
    x = 3,054.08

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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.