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Finding the Fourth Proportional to 2,722.13, 4,083.54 and 774.38

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Solution

The fourth proportional to 2,722.13, 4,083.54 and 774.38 is: 1,161.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.13 : 4,083.54 = 774.38 : x
  2. Step 2: Convert to fraction form
    2,722.13/4,083.54 = 774.38/x
  3. Step 3: Cross multiply
    2,722.13x = 4,083.54 × 774.38
  4. Step 4: Simplify right side
    2,722.13x = 3,162,221.91
  5. Step 5: Solve for x
    x = 3,162,221.91/2,722.13
  6. Step 6: Final answer
    x = 1,161.67

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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.