Home / 4,979.92-6,871.89-2,884.18

Finding the Fourth Proportional to 4,979.92, 6,871.89 and 2,884.18

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Solution

The fourth proportional to 4,979.92, 6,871.89 and 2,884.18 is: 3,979.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.92 : 6,871.89 = 2,884.18 : x
  2. Step 2: Convert to fraction form
    4,979.92/6,871.89 = 2,884.18/x
  3. Step 3: Cross multiply
    4,979.92x = 6,871.89 × 2,884.18
  4. Step 4: Simplify right side
    4,979.92x = 19,819,767.70
  5. Step 5: Solve for x
    x = 19,819,767.70/4,979.92
  6. Step 6: Final answer
    x = 3,979.94

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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.