Home / 1,979.43-2,731.65-1,095.28

Finding the Fourth Proportional to 1,979.43, 2,731.65 and 1,095.28

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Solution

The fourth proportional to 1,979.43, 2,731.65 and 1,095.28 is: 1,511.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.43 : 2,731.65 = 1,095.28 : x
  2. Step 2: Convert to fraction form
    1,979.43/2,731.65 = 1,095.28/x
  3. Step 3: Cross multiply
    1,979.43x = 2,731.65 × 1,095.28
  4. Step 4: Simplify right side
    1,979.43x = 2,991,921.61
  5. Step 5: Solve for x
    x = 2,991,921.61/1,979.43
  6. Step 6: Final answer
    x = 1,511.51

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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.