Home / 3,891.45-5,370.37-2,213.16

Finding the Fourth Proportional to 3,891.45, 5,370.37 and 2,213.16

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Solution

The fourth proportional to 3,891.45, 5,370.37 and 2,213.16 is: 3,054.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.45 : 5,370.37 = 2,213.16 : x
  2. Step 2: Convert to fraction form
    3,891.45/5,370.37 = 2,213.16/x
  3. Step 3: Cross multiply
    3,891.45x = 5,370.37 × 2,213.16
  4. Step 4: Simplify right side
    3,891.45x = 11,885,462.40
  5. Step 5: Solve for x
    x = 11,885,462.40/3,891.45
  6. Step 6: Final answer
    x = 3,054.25

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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.