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Finding the Fourth Proportional to 2,819.19, 4,227.73 and 969.79

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Solution

The fourth proportional to 2,819.19, 4,227.73 and 969.79 is: 1,454.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.19 : 4,227.73 = 969.79 : x
  2. Step 2: Convert to fraction form
    2,819.19/4,227.73 = 969.79/x
  3. Step 3: Cross multiply
    2,819.19x = 4,227.73 × 969.79
  4. Step 4: Simplify right side
    2,819.19x = 4,100,010.28
  5. Step 5: Solve for x
    x = 4,100,010.28/2,819.19
  6. Step 6: Final answer
    x = 1,454.32

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1.5x scale

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.