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Finding the Fourth Proportional to 6,814.70, 9,404.88 and 3,831.26

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Solution

The fourth proportional to 6,814.70, 9,404.88 and 3,831.26 is: 5,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,814.70 : 9,404.88 = 3,831.26 : x
  2. Step 2: Convert to fraction form
    6,814.70/9,404.88 = 3,831.26/x
  3. Step 3: Cross multiply
    6,814.70x = 9,404.88 × 3,831.26
  4. Step 4: Simplify right side
    6,814.70x = 36,032,493.52
  5. Step 5: Solve for x
    x = 36,032,493.52/6,814.70
  6. Step 6: Final answer
    x = 5,287.47

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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.