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Finding the Fourth Proportional to 5,676.39, 7,831.62 and 3,317.67

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Solution

The fourth proportional to 5,676.39, 7,831.62 and 3,317.67 is: 4,577.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,676.39 : 7,831.62 = 3,317.67 : x
  2. Step 2: Convert to fraction form
    5,676.39/7,831.62 = 3,317.67/x
  3. Step 3: Cross multiply
    5,676.39x = 7,831.62 × 3,317.67
  4. Step 4: Simplify right side
    5,676.39x = 25,982,730.73
  5. Step 5: Solve for x
    x = 25,982,730.73/5,676.39
  6. Step 6: Final answer
    x = 4,577.33

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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.