Home / 7,986.34-11,979.60-2,439.64

Finding the Fourth Proportional to 7,986.34, 11,979.60 and 2,439.64

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Solution

The fourth proportional to 7,986.34, 11,979.60 and 2,439.64 is: 3,659.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.34 : 11,979.60 = 2,439.64 : x
  2. Step 2: Convert to fraction form
    7,986.34/11,979.60 = 2,439.64/x
  3. Step 3: Cross multiply
    7,986.34x = 11,979.60 × 2,439.64
  4. Step 4: Simplify right side
    7,986.34x = 29,225,911.34
  5. Step 5: Solve for x
    x = 29,225,911.34/7,986.34
  6. Step 6: Final answer
    x = 3,659.49

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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.