Home / 5,253.07-7,879.86-2,131.47

Finding the Fourth Proportional to 5,253.07, 7,879.86 and 2,131.47

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Solution

The fourth proportional to 5,253.07, 7,879.86 and 2,131.47 is: 3,197.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,253.07 : 7,879.86 = 2,131.47 : x
  2. Step 2: Convert to fraction form
    5,253.07/7,879.86 = 2,131.47/x
  3. Step 3: Cross multiply
    5,253.07x = 7,879.86 × 2,131.47
  4. Step 4: Simplify right side
    5,253.07x = 16,795,698.23
  5. Step 5: Solve for x
    x = 16,795,698.23/5,253.07
  6. Step 6: Final answer
    x = 3,197.31

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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.