Home / 1,979.62-2,971.22-1,055.96

Finding the Fourth Proportional to 1,979.62, 2,971.22 and 1,055.96

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Solution

The fourth proportional to 1,979.62, 2,971.22 and 1,055.96 is: 1,584.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.62 : 2,971.22 = 1,055.96 : x
  2. Step 2: Convert to fraction form
    1,979.62/2,971.22 = 1,055.96/x
  3. Step 3: Cross multiply
    1,979.62x = 2,971.22 × 1,055.96
  4. Step 4: Simplify right side
    1,979.62x = 3,137,489.47
  5. Step 5: Solve for x
    x = 3,137,489.47/1,979.62
  6. Step 6: Final answer
    x = 1,584.89

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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.