Home / 3,812.48-5,261.44-2,879.36

Finding the Fourth Proportional to 3,812.48, 5,261.44 and 2,879.36

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Solution

The fourth proportional to 3,812.48, 5,261.44 and 2,879.36 is: 3,973.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.48 : 5,261.44 = 2,879.36 : x
  2. Step 2: Convert to fraction form
    3,812.48/5,261.44 = 2,879.36/x
  3. Step 3: Cross multiply
    3,812.48x = 5,261.44 × 2,879.36
  4. Step 4: Simplify right side
    3,812.48x = 15,149,579.88
  5. Step 5: Solve for x
    x = 15,149,579.88/3,812.48
  6. Step 6: Final answer
    x = 3,973.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.