Home / 2,147.36-3,220.86-1,106.80

Finding the Fourth Proportional to 2,147.36, 3,220.86 and 1,106.80

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Solution

The fourth proportional to 2,147.36, 3,220.86 and 1,106.80 is: 1,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.36 : 3,220.86 = 1,106.80 : x
  2. Step 2: Convert to fraction form
    2,147.36/3,220.86 = 1,106.80/x
  3. Step 3: Cross multiply
    2,147.36x = 3,220.86 × 1,106.80
  4. Step 4: Simplify right side
    2,147.36x = 3,564,847.85
  5. Step 5: Solve for x
    x = 3,564,847.85/2,147.36
  6. Step 6: Final answer
    x = 1,660.11

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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.