Home / 1,979.64-2,731.83-1,095.42

Finding the Fourth Proportional to 1,979.64, 2,731.83 and 1,095.42

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Solution

The fourth proportional to 1,979.64, 2,731.83 and 1,095.42 is: 1,511.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.64 : 2,731.83 = 1,095.42 : x
  2. Step 2: Convert to fraction form
    1,979.64/2,731.83 = 1,095.42/x
  3. Step 3: Cross multiply
    1,979.64x = 2,731.83 × 1,095.42
  4. Step 4: Simplify right side
    1,979.64x = 2,992,507.36
  5. Step 5: Solve for x
    x = 2,992,507.36/1,979.64
  6. Step 6: Final answer
    x = 1,511.64

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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.