Home / 4,979.09-7,465.76-2,979.78

Finding the Fourth Proportional to 4,979.09, 7,465.76 and 2,979.78

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Solution

The fourth proportional to 4,979.09, 7,465.76 and 2,979.78 is: 4,467.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.09 : 7,465.76 = 2,979.78 : x
  2. Step 2: Convert to fraction form
    4,979.09/7,465.76 = 2,979.78/x
  3. Step 3: Cross multiply
    4,979.09x = 7,465.76 × 2,979.78
  4. Step 4: Simplify right side
    4,979.09x = 22,246,329.78
  5. Step 5: Solve for x
    x = 22,246,329.78/4,979.09
  6. Step 6: Final answer
    x = 4,467.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.