Home / 3,979.45-5,969.18-2,516.59

Finding the Fourth Proportional to 3,979.45, 5,969.18 and 2,516.59

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Solution

The fourth proportional to 3,979.45, 5,969.18 and 2,516.59 is: 3,774.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.45 : 5,969.18 = 2,516.59 : x
  2. Step 2: Convert to fraction form
    3,979.45/5,969.18 = 2,516.59/x
  3. Step 3: Cross multiply
    3,979.45x = 5,969.18 × 2,516.59
  4. Step 4: Simplify right side
    3,979.45x = 15,021,978.70
  5. Step 5: Solve for x
    x = 15,021,978.70/3,979.45
  6. Step 6: Final answer
    x = 3,774.89

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1.5x scale

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.