Home / 5,811.76-8,020.38-3,159.34

Finding the Fourth Proportional to 5,811.76, 8,020.38 and 3,159.34

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Solution

The fourth proportional to 5,811.76, 8,020.38 and 3,159.34 is: 4,359.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.76 : 8,020.38 = 3,159.34 : x
  2. Step 2: Convert to fraction form
    5,811.76/8,020.38 = 3,159.34/x
  3. Step 3: Cross multiply
    5,811.76x = 8,020.38 × 3,159.34
  4. Step 4: Simplify right side
    5,811.76x = 25,339,107.35
  5. Step 5: Solve for x
    x = 25,339,107.35/5,811.76
  6. Step 6: Final answer
    x = 4,359.97

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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.