Home / 4,979.73-6,871.95-2,855.64

Finding the Fourth Proportional to 4,979.73, 6,871.95 and 2,855.64

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Solution

The fourth proportional to 4,979.73, 6,871.95 and 2,855.64 is: 3,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.73 : 6,871.95 = 2,855.64 : x
  2. Step 2: Convert to fraction form
    4,979.73/6,871.95 = 2,855.64/x
  3. Step 3: Cross multiply
    4,979.73x = 6,871.95 × 2,855.64
  4. Step 4: Simplify right side
    4,979.73x = 19,623,815.30
  5. Step 5: Solve for x
    x = 19,623,815.30/4,979.73
  6. Step 6: Final answer
    x = 3,940.74

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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.