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Finding the Fourth Proportional to 1,831.85, 2,747.89 and 736.21

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Solution

The fourth proportional to 1,831.85, 2,747.89 and 736.21 is: 1,104.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.85 : 2,747.89 = 736.21 : x
  2. Step 2: Convert to fraction form
    1,831.85/2,747.89 = 736.21/x
  3. Step 3: Cross multiply
    1,831.85x = 2,747.89 × 736.21
  4. Step 4: Simplify right side
    1,831.85x = 2,023,026.86
  5. Step 5: Solve for x
    x = 2,023,026.86/1,831.85
  6. Step 6: Final answer
    x = 1,104.37

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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.