Home / 1,819.41-2,511.54-1,230.75

Finding the Fourth Proportional to 1,819.41, 2,511.54 and 1,230.75

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Solution

The fourth proportional to 1,819.41, 2,511.54 and 1,230.75 is: 1,698.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.41 : 2,511.54 = 1,230.75 : x
  2. Step 2: Convert to fraction form
    1,819.41/2,511.54 = 1,230.75/x
  3. Step 3: Cross multiply
    1,819.41x = 2,511.54 × 1,230.75
  4. Step 4: Simplify right side
    1,819.41x = 3,091,077.86
  5. Step 5: Solve for x
    x = 3,091,077.86/1,819.41
  6. Step 6: Final answer
    x = 1,698.95

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Half scale
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Double scale
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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.