Home / 10,717.31-16,078.40-3,791.81

Finding the Fourth Proportional to 10,717.31, 16,078.40 and 3,791.81

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Solution

The fourth proportional to 10,717.31, 16,078.40 and 3,791.81 is: 5,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,717.31 : 16,078.40 = 3,791.81 : x
  2. Step 2: Convert to fraction form
    10,717.31/16,078.40 = 3,791.81/x
  3. Step 3: Cross multiply
    10,717.31x = 16,078.40 × 3,791.81
  4. Step 4: Simplify right side
    10,717.31x = 60,966,273.36
  5. Step 5: Solve for x
    x = 60,966,273.36/10,717.31
  6. Step 6: Final answer
    x = 5,688.58

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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.