Home / 7,986.45-11,028.23-5,007.40

Finding the Fourth Proportional to 7,986.45, 11,028.23 and 5,007.40

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Solution

The fourth proportional to 7,986.45, 11,028.23 and 5,007.40 is: 6,914.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.45 : 11,028.23 = 5,007.40 : x
  2. Step 2: Convert to fraction form
    7,986.45/11,028.23 = 5,007.40/x
  3. Step 3: Cross multiply
    7,986.45x = 11,028.23 × 5,007.40
  4. Step 4: Simplify right side
    7,986.45x = 55,222,733.87
  5. Step 5: Solve for x
    x = 55,222,733.87/7,986.45
  6. Step 6: Final answer
    x = 6,914.56

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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.