Home / 2,979.77-4,112.27-1,721.06

Finding the Fourth Proportional to 2,979.77, 4,112.27 and 1,721.06

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Solution

The fourth proportional to 2,979.77, 4,112.27 and 1,721.06 is: 2,375.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.77 : 4,112.27 = 1,721.06 : x
  2. Step 2: Convert to fraction form
    2,979.77/4,112.27 = 1,721.06/x
  3. Step 3: Cross multiply
    2,979.77x = 4,112.27 × 1,721.06
  4. Step 4: Simplify right side
    2,979.77x = 7,077,450.14
  5. Step 5: Solve for x
    x = 7,077,450.14/2,979.77
  6. Step 6: Final answer
    x = 2,375.17

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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.