Home / 4,979.52-6,871.91-2,855.46

Finding the Fourth Proportional to 4,979.52, 6,871.91 and 2,855.46

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Solution

The fourth proportional to 4,979.52, 6,871.91 and 2,855.46 is: 3,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.52 : 6,871.91 = 2,855.46 : x
  2. Step 2: Convert to fraction form
    4,979.52/6,871.91 = 2,855.46/x
  3. Step 3: Cross multiply
    4,979.52x = 6,871.91 × 2,855.46
  4. Step 4: Simplify right side
    4,979.52x = 19,622,449.85
  5. Step 5: Solve for x
    x = 19,622,449.85/4,979.52
  6. Step 6: Final answer
    x = 3,940.63

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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.