Home / 4,140.58-5,712.61-2,811.98

Finding the Fourth Proportional to 4,140.58, 5,712.61 and 2,811.98

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Solution

The fourth proportional to 4,140.58, 5,712.61 and 2,811.98 is: 3,879.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.58 : 5,712.61 = 2,811.98 : x
  2. Step 2: Convert to fraction form
    4,140.58/5,712.61 = 2,811.98/x
  3. Step 3: Cross multiply
    4,140.58x = 5,712.61 × 2,811.98
  4. Step 4: Simplify right side
    4,140.58x = 16,063,745.07
  5. Step 5: Solve for x
    x = 16,063,745.07/4,140.58
  6. Step 6: Final answer
    x = 3,879.59

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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.