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Finding the Fourth Proportional to 1,979.92, 2,973.36 and 1,901.56

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Solution

The fourth proportional to 1,979.92, 2,973.36 and 1,901.56 is: 2,855.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.92 : 2,973.36 = 1,901.56 : x
  2. Step 2: Convert to fraction form
    1,979.92/2,973.36 = 1,901.56/x
  3. Step 3: Cross multiply
    1,979.92x = 2,973.36 × 1,901.56
  4. Step 4: Simplify right side
    1,979.92x = 5,654,022.44
  5. Step 5: Solve for x
    x = 5,654,022.44/1,979.92
  6. Step 6: Final answer
    x = 2,855.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.