Home / 3,106.81-4,659.49-1,992.86

Finding the Fourth Proportional to 3,106.81, 4,659.49 and 1,992.86

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Solution

The fourth proportional to 3,106.81, 4,659.49 and 1,992.86 is: 2,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.81 : 4,659.49 = 1,992.86 : x
  2. Step 2: Convert to fraction form
    3,106.81/4,659.49 = 1,992.86/x
  3. Step 3: Cross multiply
    3,106.81x = 4,659.49 × 1,992.86
  4. Step 4: Simplify right side
    3,106.81x = 9,285,679.23
  5. Step 5: Solve for x
    x = 9,285,679.23/3,106.81
  6. Step 6: Final answer
    x = 2,988.82

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1.5x scale

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.