Home / 2,202.80-3,308.76-2,128.99

Finding the Fourth Proportional to 2,202.80, 3,308.76 and 2,128.99

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Solution

The fourth proportional to 2,202.80, 3,308.76 and 2,128.99 is: 3,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,202.80 : 3,308.76 = 2,128.99 : x
  2. Step 2: Convert to fraction form
    2,202.80/3,308.76 = 2,128.99/x
  3. Step 3: Cross multiply
    2,202.80x = 3,308.76 × 2,128.99
  4. Step 4: Simplify right side
    2,202.80x = 7,044,316.95
  5. Step 5: Solve for x
    x = 7,044,316.95/2,202.80
  6. Step 6: Final answer
    x = 3,197.89

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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.