Home / 3,979.13-5,970.00-2,129.83

Finding the Fourth Proportional to 3,979.13, 5,970.00 and 2,129.83

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Solution

The fourth proportional to 3,979.13, 5,970.00 and 2,129.83 is: 3,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.13 : 5,970.00 = 2,129.83 : x
  2. Step 2: Convert to fraction form
    3,979.13/5,970.00 = 2,129.83/x
  3. Step 3: Cross multiply
    3,979.13x = 5,970.00 × 2,129.83
  4. Step 4: Simplify right side
    3,979.13x = 12,715,078.16
  5. Step 5: Solve for x
    x = 12,715,078.16/3,979.13
  6. Step 6: Final answer
    x = 3,195.45

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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.