Home / 2,128.42-3,192.63-1,262.26

Finding the Fourth Proportional to 2,128.42, 3,192.63 and 1,262.26

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Solution

The fourth proportional to 2,128.42, 3,192.63 and 1,262.26 is: 1,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.42 : 3,192.63 = 1,262.26 : x
  2. Step 2: Convert to fraction form
    2,128.42/3,192.63 = 1,262.26/x
  3. Step 3: Cross multiply
    2,128.42x = 3,192.63 × 1,262.26
  4. Step 4: Simplify right side
    2,128.42x = 4,029,929.14
  5. Step 5: Solve for x
    x = 4,029,929.14/2,128.42
  6. Step 6: Final answer
    x = 1,893.39

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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.