Home / 1,920.05-2,879.96-1,097.80

Finding the Fourth Proportional to 1,920.05, 2,879.96 and 1,097.80

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Solution

The fourth proportional to 1,920.05, 2,879.96 and 1,097.80 is: 1,646.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.05 : 2,879.96 = 1,097.80 : x
  2. Step 2: Convert to fraction form
    1,920.05/2,879.96 = 1,097.80/x
  3. Step 3: Cross multiply
    1,920.05x = 2,879.96 × 1,097.80
  4. Step 4: Simplify right side
    1,920.05x = 3,161,615.63
  5. Step 5: Solve for x
    x = 3,161,615.63/1,920.05
  6. Step 6: Final answer
    x = 1,646.64

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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.