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Finding the Fourth Proportional to 1,879.54, 2,819.95 and 904.97

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Solution

The fourth proportional to 1,879.54, 2,819.95 and 904.97 is: 1,357.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,879.54 : 2,819.95 = 904.97 : x
  2. Step 2: Convert to fraction form
    1,879.54/2,819.95 = 904.97/x
  3. Step 3: Cross multiply
    1,879.54x = 2,819.95 × 904.97
  4. Step 4: Simplify right side
    1,879.54x = 2,551,974.94
  5. Step 5: Solve for x
    x = 2,551,974.94/1,879.54
  6. Step 6: Final answer
    x = 1,357.77

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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.