Home / 2,809.38-3,876.87-1,550.37

Finding the Fourth Proportional to 2,809.38, 3,876.87 and 1,550.37

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Solution

The fourth proportional to 2,809.38, 3,876.87 and 1,550.37 is: 2,139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.38 : 3,876.87 = 1,550.37 : x
  2. Step 2: Convert to fraction form
    2,809.38/3,876.87 = 1,550.37/x
  3. Step 3: Cross multiply
    2,809.38x = 3,876.87 × 1,550.37
  4. Step 4: Simplify right side
    2,809.38x = 6,010,582.94
  5. Step 5: Solve for x
    x = 6,010,582.94/2,809.38
  6. Step 6: Final answer
    x = 2,139.47

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1.5x scale

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.