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Finding the Fourth Proportional to 3,076.97, 4,615.61 and 996.81

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Solution

The fourth proportional to 3,076.97, 4,615.61 and 996.81 is: 1,495.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.97 : 4,615.61 = 996.81 : x
  2. Step 2: Convert to fraction form
    3,076.97/4,615.61 = 996.81/x
  3. Step 3: Cross multiply
    3,076.97x = 4,615.61 × 996.81
  4. Step 4: Simplify right side
    3,076.97x = 4,600,881.22
  5. Step 5: Solve for x
    x = 4,600,881.22/3,076.97
  6. Step 6: Final answer
    x = 1,495.27

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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.