Home / 2,979.36-4,460.38-2,115.36

Finding the Fourth Proportional to 2,979.36, 4,460.38 and 2,115.36

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Solution

The fourth proportional to 2,979.36, 4,460.38 and 2,115.36 is: 3,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.36 : 4,460.38 = 2,115.36 : x
  2. Step 2: Convert to fraction form
    2,979.36/4,460.38 = 2,115.36/x
  3. Step 3: Cross multiply
    2,979.36x = 4,460.38 × 2,115.36
  4. Step 4: Simplify right side
    2,979.36x = 9,435,309.44
  5. Step 5: Solve for x
    x = 9,435,309.44/2,979.36
  6. Step 6: Final answer
    x = 3,166.89

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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.