Home / 2,089.80-2,879.55-1,944

Finding the Fourth Proportional to 2,089.80, 2,879.55 and 1,944

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Solution

The fourth proportional to 2,089.80, 2,879.55 and 1,944 is: 2,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.80 : 2,879.55 = 1,944 : x
  2. Step 2: Convert to fraction form
    2,089.80/2,879.55 = 1,944/x
  3. Step 3: Cross multiply
    2,089.80x = 2,879.55 × 1,944
  4. Step 4: Simplify right side
    2,089.80x = 5,597,845.20
  5. Step 5: Solve for x
    x = 5,597,845.20/2,089.80
  6. Step 6: Final answer
    x = 2,678.65

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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.