Home / 2,979.62-4,110.69-1,917.23

Finding the Fourth Proportional to 2,979.62, 4,110.69 and 1,917.23

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Solution

The fourth proportional to 2,979.62, 4,110.69 and 1,917.23 is: 2,645.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.62 : 4,110.69 = 1,917.23 : x
  2. Step 2: Convert to fraction form
    2,979.62/4,110.69 = 1,917.23/x
  3. Step 3: Cross multiply
    2,979.62x = 4,110.69 × 1,917.23
  4. Step 4: Simplify right side
    2,979.62x = 7,881,138.19
  5. Step 5: Solve for x
    x = 7,881,138.19/2,979.62
  6. Step 6: Final answer
    x = 2,645.01

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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.