Home / 4,979.16-7,469.40-2,640.36

Finding the Fourth Proportional to 4,979.16, 7,469.40 and 2,640.36

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Solution

The fourth proportional to 4,979.16, 7,469.40 and 2,640.36 is: 3,960.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.16 : 7,469.40 = 2,640.36 : x
  2. Step 2: Convert to fraction form
    4,979.16/7,469.40 = 2,640.36/x
  3. Step 3: Cross multiply
    4,979.16x = 7,469.40 × 2,640.36
  4. Step 4: Simplify right side
    4,979.16x = 19,721,904.98
  5. Step 5: Solve for x
    x = 19,721,904.98/4,979.16
  6. Step 6: Final answer
    x = 3,960.89

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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.