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Finding the Fourth Proportional to 1,949.12, 2,923.74 and 852.92

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Solution

The fourth proportional to 1,949.12, 2,923.74 and 852.92 is: 1,279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.12 : 2,923.74 = 852.92 : x
  2. Step 2: Convert to fraction form
    1,949.12/2,923.74 = 852.92/x
  3. Step 3: Cross multiply
    1,949.12x = 2,923.74 × 852.92
  4. Step 4: Simplify right side
    1,949.12x = 2,493,716.32
  5. Step 5: Solve for x
    x = 2,493,716.32/1,949.12
  6. Step 6: Final answer
    x = 1,279.41

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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.