Home / 1,979.82-2,731.05-1,558.62

Finding the Fourth Proportional to 1,979.82, 2,731.05 and 1,558.62

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Solution

The fourth proportional to 1,979.82, 2,731.05 and 1,558.62 is: 2,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.82 : 2,731.05 = 1,558.62 : x
  2. Step 2: Convert to fraction form
    1,979.82/2,731.05 = 1,558.62/x
  3. Step 3: Cross multiply
    1,979.82x = 2,731.05 × 1,558.62
  4. Step 4: Simplify right side
    1,979.82x = 4,256,669.15
  5. Step 5: Solve for x
    x = 4,256,669.15/1,979.82
  6. Step 6: Final answer
    x = 2,150.03

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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.