Home / 4,979.07-6,866.69-3,929.31

Finding the Fourth Proportional to 4,979.07, 6,866.69 and 3,929.31

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Solution

The fourth proportional to 4,979.07, 6,866.69 and 3,929.31 is: 5,418.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.07 : 6,866.69 = 3,929.31 : x
  2. Step 2: Convert to fraction form
    4,979.07/6,866.69 = 3,929.31/x
  3. Step 3: Cross multiply
    4,979.07x = 6,866.69 × 3,929.31
  4. Step 4: Simplify right side
    4,979.07x = 26,981,334.04
  5. Step 5: Solve for x
    x = 26,981,334.04/4,979.07
  6. Step 6: Final answer
    x = 5,418.95

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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.