Home / 7,819.71-11,729.57-1,976.33

Finding the Fourth Proportional to 7,819.71, 11,729.57 and 1,976.33

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Solution

The fourth proportional to 7,819.71, 11,729.57 and 1,976.33 is: 2,964.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.71 : 11,729.57 = 1,976.33 : x
  2. Step 2: Convert to fraction form
    7,819.71/11,729.57 = 1,976.33/x
  3. Step 3: Cross multiply
    7,819.71x = 11,729.57 × 1,976.33
  4. Step 4: Simplify right side
    7,819.71x = 23,181,432.55
  5. Step 5: Solve for x
    x = 23,181,432.55/7,819.71
  6. Step 6: Final answer
    x = 2,964.49

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Double scale
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Similar ratio
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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.