Home / 7,879.85-11,823.36-2,949.87

Finding the Fourth Proportional to 7,879.85, 11,823.36 and 2,949.87

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Solution

The fourth proportional to 7,879.85, 11,823.36 and 2,949.87 is: 4,426.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.85 : 11,823.36 = 2,949.87 : x
  2. Step 2: Convert to fraction form
    7,879.85/11,823.36 = 2,949.87/x
  3. Step 3: Cross multiply
    7,879.85x = 11,823.36 × 2,949.87
  4. Step 4: Simplify right side
    7,879.85x = 34,877,369.43
  5. Step 5: Solve for x
    x = 34,877,369.43/7,879.85
  6. Step 6: Final answer
    x = 4,426.15

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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.