Home / 1,979.09-2,732.18-1,447.39

Finding the Fourth Proportional to 1,979.09, 2,732.18 and 1,447.39

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Solution

The fourth proportional to 1,979.09, 2,732.18 and 1,447.39 is: 1,998.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.09 : 2,732.18 = 1,447.39 : x
  2. Step 2: Convert to fraction form
    1,979.09/2,732.18 = 1,447.39/x
  3. Step 3: Cross multiply
    1,979.09x = 2,732.18 × 1,447.39
  4. Step 4: Simplify right side
    1,979.09x = 3,954,530.01
  5. Step 5: Solve for x
    x = 3,954,530.01/1,979.09
  6. Step 6: Final answer
    x = 1,998.16

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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.