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Finding the Fourth Proportional to 1,481.11, 2,221.94 and 741.11

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Solution

The fourth proportional to 1,481.11, 2,221.94 and 741.11 is: 1,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.11 : 2,221.94 = 741.11 : x
  2. Step 2: Convert to fraction form
    1,481.11/2,221.94 = 741.11/x
  3. Step 3: Cross multiply
    1,481.11x = 2,221.94 × 741.11
  4. Step 4: Simplify right side
    1,481.11x = 1,646,701.95
  5. Step 5: Solve for x
    x = 1,646,701.95/1,481.11
  6. Step 6: Final answer
    x = 1,111.80

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Double scale
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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.