Home / 7,828.25-11,739.66-3,146.87

Finding the Fourth Proportional to 7,828.25, 11,739.66 and 3,146.87

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Solution

The fourth proportional to 7,828.25, 11,739.66 and 3,146.87 is: 4,719.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.25 : 11,739.66 = 3,146.87 : x
  2. Step 2: Convert to fraction form
    7,828.25/11,739.66 = 3,146.87/x
  3. Step 3: Cross multiply
    7,828.25x = 11,739.66 × 3,146.87
  4. Step 4: Simplify right side
    7,828.25x = 36,943,183.86
  5. Step 5: Solve for x
    x = 36,943,183.86/7,828.25
  6. Step 6: Final answer
    x = 4,719.21

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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.