Home / 8,867.16-13,286.31-5,172.54

Finding the Fourth Proportional to 8,867.16, 13,286.31 and 5,172.54

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Solution

The fourth proportional to 8,867.16, 13,286.31 and 5,172.54 is: 7,750.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.16 : 13,286.31 = 5,172.54 : x
  2. Step 2: Convert to fraction form
    8,867.16/13,286.31 = 5,172.54/x
  3. Step 3: Cross multiply
    8,867.16x = 13,286.31 × 5,172.54
  4. Step 4: Simplify right side
    8,867.16x = 68,723,969.93
  5. Step 5: Solve for x
    x = 68,723,969.93/8,867.16
  6. Step 6: Final answer
    x = 7,750.39

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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.