Home / 3,705.12-5,111.82-2,213.64

Finding the Fourth Proportional to 3,705.12, 5,111.82 and 2,213.64

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Solution

The fourth proportional to 3,705.12, 5,111.82 and 2,213.64 is: 3,054.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.12 : 5,111.82 = 2,213.64 : x
  2. Step 2: Convert to fraction form
    3,705.12/5,111.82 = 2,213.64/x
  3. Step 3: Cross multiply
    3,705.12x = 5,111.82 × 2,213.64
  4. Step 4: Simplify right side
    3,705.12x = 11,315,729.22
  5. Step 5: Solve for x
    x = 11,315,729.22/3,705.12
  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.