Home / 2,923.39-4,032.78-1,979.22

Finding the Fourth Proportional to 2,923.39, 4,032.78 and 1,979.22

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Solution

The fourth proportional to 2,923.39, 4,032.78 and 1,979.22 is: 2,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,923.39 : 4,032.78 = 1,979.22 : x
  2. Step 2: Convert to fraction form
    2,923.39/4,032.78 = 1,979.22/x
  3. Step 3: Cross multiply
    2,923.39x = 4,032.78 × 1,979.22
  4. Step 4: Simplify right side
    2,923.39x = 7,981,758.83
  5. Step 5: Solve for x
    x = 7,981,758.83/2,923.39
  6. Step 6: Final answer
    x = 2,730.31

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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.