Home / 3,104.85-4,284.80-1,778.81

Finding the Fourth Proportional to 3,104.85, 4,284.80 and 1,778.81

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Solution

The fourth proportional to 3,104.85, 4,284.80 and 1,778.81 is: 2,454.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,104.85 : 4,284.80 = 1,778.81 : x
  2. Step 2: Convert to fraction form
    3,104.85/4,284.80 = 1,778.81/x
  3. Step 3: Cross multiply
    3,104.85x = 4,284.80 × 1,778.81
  4. Step 4: Simplify right side
    3,104.85x = 7,621,831.99
  5. Step 5: Solve for x
    x = 7,621,831.99/3,104.85
  6. Step 6: Final answer
    x = 2,454.82

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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.