Home / 5,811.98-8,020.21-3,159.37

Finding the Fourth Proportional to 5,811.98, 8,020.21 and 3,159.37

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Solution

The fourth proportional to 5,811.98, 8,020.21 and 3,159.37 is: 4,359.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.98 : 8,020.21 = 3,159.37 : x
  2. Step 2: Convert to fraction form
    5,811.98/8,020.21 = 3,159.37/x
  3. Step 3: Cross multiply
    5,811.98x = 8,020.21 × 3,159.37
  4. Step 4: Simplify right side
    5,811.98x = 25,338,810.87
  5. Step 5: Solve for x
    x = 25,338,810.87/5,811.98
  6. Step 6: Final answer
    x = 4,359.76

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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.