Home / 2,192.78-3,026.32-1,406.54

Finding the Fourth Proportional to 2,192.78, 3,026.32 and 1,406.54

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Solution

The fourth proportional to 2,192.78, 3,026.32 and 1,406.54 is: 1,941.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.78 : 3,026.32 = 1,406.54 : x
  2. Step 2: Convert to fraction form
    2,192.78/3,026.32 = 1,406.54/x
  3. Step 3: Cross multiply
    2,192.78x = 3,026.32 × 1,406.54
  4. Step 4: Simplify right side
    2,192.78x = 4,256,640.13
  5. Step 5: Solve for x
    x = 4,256,640.13/2,192.78
  6. Step 6: Final answer
    x = 1,941.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.