Home / 1,980.09-2,733.56-1,448.39

Finding the Fourth Proportional to 1,980.09, 2,733.56 and 1,448.39

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Solution

The fourth proportional to 1,980.09, 2,733.56 and 1,448.39 is: 1,999.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.09 : 2,733.56 = 1,448.39 : x
  2. Step 2: Convert to fraction form
    1,980.09/2,733.56 = 1,448.39/x
  3. Step 3: Cross multiply
    1,980.09x = 2,733.56 × 1,448.39
  4. Step 4: Simplify right side
    1,980.09x = 3,959,260.97
  5. Step 5: Solve for x
    x = 3,959,260.97/1,980.09
  6. Step 6: Final answer
    x = 1,999.54

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1.5x scale

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.