Home / 2,919.51-4,005.79-2,891.97

Finding the Fourth Proportional to 2,919.51, 4,005.79 and 2,891.97

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Solution

The fourth proportional to 2,919.51, 4,005.79 and 2,891.97 is: 3,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.51 : 4,005.79 = 2,891.97 : x
  2. Step 2: Convert to fraction form
    2,919.51/4,005.79 = 2,891.97/x
  3. Step 3: Cross multiply
    2,919.51x = 4,005.79 × 2,891.97
  4. Step 4: Simplify right side
    2,919.51x = 11,584,617.28
  5. Step 5: Solve for x
    x = 11,584,617.28/2,919.51
  6. Step 6: Final answer
    x = 3,968.00

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.