Home / 5,811.89-8,020.37-3,159.30

Finding the Fourth Proportional to 5,811.89, 8,020.37 and 3,159.30

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Solution

The fourth proportional to 5,811.89, 8,020.37 and 3,159.30 is: 4,359.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.89 : 8,020.37 = 3,159.30 : x
  2. Step 2: Convert to fraction form
    5,811.89/8,020.37 = 3,159.30/x
  3. Step 3: Cross multiply
    5,811.89x = 8,020.37 × 3,159.30
  4. Step 4: Simplify right side
    5,811.89x = 25,338,739.14
  5. Step 5: Solve for x
    x = 25,338,739.14/5,811.89
  6. Step 6: Final answer
    x = 4,359.81

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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.