Home / 7,949.76-11,919.84-4,661.28

Finding the Fourth Proportional to 7,949.76, 11,919.84 and 4,661.28

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Solution

The fourth proportional to 7,949.76, 11,919.84 and 4,661.28 is: 6,989.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,949.76 : 11,919.84 = 4,661.28 : x
  2. Step 2: Convert to fraction form
    7,949.76/11,919.84 = 4,661.28/x
  3. Step 3: Cross multiply
    7,949.76x = 11,919.84 × 4,661.28
  4. Step 4: Simplify right side
    7,949.76x = 55,561,711.80
  5. Step 5: Solve for x
    x = 55,561,711.80/7,949.76
  6. Step 6: Final answer
    x = 6,989.11

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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.