Home / 3,619.39-4,994.75-2,128.16

Finding the Fourth Proportional to 3,619.39, 4,994.75 and 2,128.16

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Solution

The fourth proportional to 3,619.39, 4,994.75 and 2,128.16 is: 2,936.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.39 : 4,994.75 = 2,128.16 : x
  2. Step 2: Convert to fraction form
    3,619.39/4,994.75 = 2,128.16/x
  3. Step 3: Cross multiply
    3,619.39x = 4,994.75 × 2,128.16
  4. Step 4: Simplify right side
    3,619.39x = 10,629,633.00
  5. Step 5: Solve for x
    x = 10,629,633.00/3,619.39
  6. Step 6: Final answer
    x = 2,936.86

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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.