Home / 1,979.36-2,731.44-1,095.12

Finding the Fourth Proportional to 1,979.36, 2,731.44 and 1,095.12

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Solution

The fourth proportional to 1,979.36, 2,731.44 and 1,095.12 is: 1,511.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.36 : 2,731.44 = 1,095.12 : x
  2. Step 2: Convert to fraction form
    1,979.36/2,731.44 = 1,095.12/x
  3. Step 3: Cross multiply
    1,979.36x = 2,731.44 × 1,095.12
  4. Step 4: Simplify right side
    1,979.36x = 2,991,254.57
  5. Step 5: Solve for x
    x = 2,991,254.57/1,979.36
  6. Step 6: Final answer
    x = 1,511.22

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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.