Home / 9,318.97-13,979.40-3,079

Finding the Fourth Proportional to 9,318.97, 13,979.40 and 3,079

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Solution

The fourth proportional to 9,318.97, 13,979.40 and 3,079 is: 4,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.97 : 13,979.40 = 3,079 : x
  2. Step 2: Convert to fraction form
    9,318.97/13,979.40 = 3,079/x
  3. Step 3: Cross multiply
    9,318.97x = 13,979.40 × 3,079
  4. Step 4: Simplify right side
    9,318.97x = 43,042,572.60
  5. Step 5: Solve for x
    x = 43,042,572.60/9,318.97
  6. Step 6: Final answer
    x = 4,618.81

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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.