Home / 2,839.16-3,914.81-1,999.60

Finding the Fourth Proportional to 2,839.16, 3,914.81 and 1,999.60

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Solution

The fourth proportional to 2,839.16, 3,914.81 and 1,999.60 is: 2,757.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.16 : 3,914.81 = 1,999.60 : x
  2. Step 2: Convert to fraction form
    2,839.16/3,914.81 = 1,999.60/x
  3. Step 3: Cross multiply
    2,839.16x = 3,914.81 × 1,999.60
  4. Step 4: Simplify right side
    2,839.16x = 7,828,054.08
  5. Step 5: Solve for x
    x = 7,828,054.08/2,839.16
  6. Step 6: Final answer
    x = 2,757.17

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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.