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Finding the Fourth Proportional to 2,380.81, 3,569.91 and 736.90

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Solution

The fourth proportional to 2,380.81, 3,569.91 and 736.90 is: 1,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.81 : 3,569.91 = 736.90 : x
  2. Step 2: Convert to fraction form
    2,380.81/3,569.91 = 736.90/x
  3. Step 3: Cross multiply
    2,380.81x = 3,569.91 × 736.90
  4. Step 4: Simplify right side
    2,380.81x = 2,630,662.99
  5. Step 5: Solve for x
    x = 2,630,662.99/2,380.81
  6. Step 6: Final answer
    x = 1,104.94

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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.