Home / 2,128.35-3,192.36-1,200.99

Finding the Fourth Proportional to 2,128.35, 3,192.36 and 1,200.99

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Solution

The fourth proportional to 2,128.35, 3,192.36 and 1,200.99 is: 1,801.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.35 : 3,192.36 = 1,200.99 : x
  2. Step 2: Convert to fraction form
    2,128.35/3,192.36 = 1,200.99/x
  3. Step 3: Cross multiply
    2,128.35x = 3,192.36 × 1,200.99
  4. Step 4: Simplify right side
    2,128.35x = 3,833,992.44
  5. Step 5: Solve for x
    x = 3,833,992.44/2,128.35
  6. Step 6: Final answer
    x = 1,801.39

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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.