Home / 1,961.23-2,707.01-1,214.76

Finding the Fourth Proportional to 1,961.23, 2,707.01 and 1,214.76

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Solution

The fourth proportional to 1,961.23, 2,707.01 and 1,214.76 is: 1,676.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.23 : 2,707.01 = 1,214.76 : x
  2. Step 2: Convert to fraction form
    1,961.23/2,707.01 = 1,214.76/x
  3. Step 3: Cross multiply
    1,961.23x = 2,707.01 × 1,214.76
  4. Step 4: Simplify right side
    1,961.23x = 3,288,361.39
  5. Step 5: Solve for x
    x = 3,288,361.39/1,961.23
  6. Step 6: Final answer
    x = 1,676.69

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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.