Home / 3,208.80-4,810.65-2,105.09

Finding the Fourth Proportional to 3,208.80, 4,810.65 and 2,105.09

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Solution

The fourth proportional to 3,208.80, 4,810.65 and 2,105.09 is: 3,155.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.80 : 4,810.65 = 2,105.09 : x
  2. Step 2: Convert to fraction form
    3,208.80/4,810.65 = 2,105.09/x
  3. Step 3: Cross multiply
    3,208.80x = 4,810.65 × 2,105.09
  4. Step 4: Simplify right side
    3,208.80x = 10,126,852.10
  5. Step 5: Solve for x
    x = 10,126,852.10/3,208.80
  6. Step 6: Final answer
    x = 3,155.97

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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.