Home / 1,979.28-2,730.72-1,182.48

Finding the Fourth Proportional to 1,979.28, 2,730.72 and 1,182.48

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Solution

The fourth proportional to 1,979.28, 2,730.72 and 1,182.48 is: 1,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.28 : 2,730.72 = 1,182.48 : x
  2. Step 2: Convert to fraction form
    1,979.28/2,730.72 = 1,182.48/x
  3. Step 3: Cross multiply
    1,979.28x = 2,730.72 × 1,182.48
  4. Step 4: Simplify right side
    1,979.28x = 3,229,021.79
  5. Step 5: Solve for x
    x = 3,229,021.79/1,979.28
  6. Step 6: Final answer
    x = 1,631.41

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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.