Home / 3,259.86-4,889.97-1,311.81

Finding the Fourth Proportional to 3,259.86, 4,889.97 and 1,311.81

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Solution

The fourth proportional to 3,259.86, 4,889.97 and 1,311.81 is: 1,967.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,259.86 : 4,889.97 = 1,311.81 : x
  2. Step 2: Convert to fraction form
    3,259.86/4,889.97 = 1,311.81/x
  3. Step 3: Cross multiply
    3,259.86x = 4,889.97 × 1,311.81
  4. Step 4: Simplify right side
    3,259.86x = 6,414,711.55
  5. Step 5: Solve for x
    x = 6,414,711.55/3,259.86
  6. Step 6: Final answer
    x = 1,967.79

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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.