Home / 2,579.48-3,865.38-2,120.48

Finding the Fourth Proportional to 2,579.48, 3,865.38 and 2,120.48

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Solution

The fourth proportional to 2,579.48, 3,865.38 and 2,120.48 is: 3,177.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.48 : 3,865.38 = 2,120.48 : x
  2. Step 2: Convert to fraction form
    2,579.48/3,865.38 = 2,120.48/x
  3. Step 3: Cross multiply
    2,579.48x = 3,865.38 × 2,120.48
  4. Step 4: Simplify right side
    2,579.48x = 8,196,460.98
  5. Step 5: Solve for x
    x = 8,196,460.98/2,579.48
  6. Step 6: Final answer
    x = 3,177.56

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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.