Home / 5,811.86-8,020.39-3,159.31

Finding the Fourth Proportional to 5,811.86, 8,020.39 and 3,159.31

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Solution

The fourth proportional to 5,811.86, 8,020.39 and 3,159.31 is: 4,359.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.86 : 8,020.39 = 3,159.31 : x
  2. Step 2: Convert to fraction form
    5,811.86/8,020.39 = 3,159.31/x
  3. Step 3: Cross multiply
    5,811.86x = 8,020.39 × 3,159.31
  4. Step 4: Simplify right side
    5,811.86x = 25,338,898.33
  5. Step 5: Solve for x
    x = 25,338,898.33/5,811.86
  6. Step 6: Final answer
    x = 4,359.86

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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.