Home / 3,979.67-5,970.47-2,811.94

Finding the Fourth Proportional to 3,979.67, 5,970.47 and 2,811.94

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Solution

The fourth proportional to 3,979.67, 5,970.47 and 2,811.94 is: 4,218.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.67 : 5,970.47 = 2,811.94 : x
  2. Step 2: Convert to fraction form
    3,979.67/5,970.47 = 2,811.94/x
  3. Step 3: Cross multiply
    3,979.67x = 5,970.47 × 2,811.94
  4. Step 4: Simplify right side
    3,979.67x = 16,788,574.43
  5. Step 5: Solve for x
    x = 16,788,574.43/3,979.67
  6. Step 6: Final answer
    x = 4,218.59

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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.