Home / 4,079.76-5,629.38-2,311

Finding the Fourth Proportional to 4,079.76, 5,629.38 and 2,311

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Solution

The fourth proportional to 4,079.76, 5,629.38 and 2,311 is: 3,188.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.76 : 5,629.38 = 2,311 : x
  2. Step 2: Convert to fraction form
    4,079.76/5,629.38 = 2,311/x
  3. Step 3: Cross multiply
    4,079.76x = 5,629.38 × 2,311
  4. Step 4: Simplify right side
    4,079.76x = 13,009,497.18
  5. Step 5: Solve for x
    x = 13,009,497.18/4,079.76
  6. Step 6: Final answer
    x = 3,188.79

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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.