Home / 7,979.54-11,971.13-3,820.59

Finding the Fourth Proportional to 7,979.54, 11,971.13 and 3,820.59

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Solution

The fourth proportional to 7,979.54, 11,971.13 and 3,820.59 is: 5,731.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.54 : 11,971.13 = 3,820.59 : x
  2. Step 2: Convert to fraction form
    7,979.54/11,971.13 = 3,820.59/x
  3. Step 3: Cross multiply
    7,979.54x = 11,971.13 × 3,820.59
  4. Step 4: Simplify right side
    7,979.54x = 45,736,760.46
  5. Step 5: Solve for x
    x = 45,736,760.46/7,979.54
  6. Step 6: Final answer
    x = 5,731.76

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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.