Home / 3,812.24-5,261.04-2,879.12

Finding the Fourth Proportional to 3,812.24, 5,261.04 and 2,879.12

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Solution

The fourth proportional to 3,812.24, 5,261.04 and 2,879.12 is: 3,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.24 : 5,261.04 = 2,879.12 : x
  2. Step 2: Convert to fraction form
    3,812.24/5,261.04 = 2,879.12/x
  3. Step 3: Cross multiply
    3,812.24x = 5,261.04 × 2,879.12
  4. Step 4: Simplify right side
    3,812.24x = 15,147,165.48
  5. Step 5: Solve for x
    x = 15,147,165.48/3,812.24
  6. Step 6: Final answer
    x = 3,973.30

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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.