Home / 7,873.20-11,811.30-2,942.64

Finding the Fourth Proportional to 7,873.20, 11,811.30 and 2,942.64

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Solution

The fourth proportional to 7,873.20, 11,811.30 and 2,942.64 is: 4,414.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,873.20 : 11,811.30 = 2,942.64 : x
  2. Step 2: Convert to fraction form
    7,873.20/11,811.30 = 2,942.64/x
  3. Step 3: Cross multiply
    7,873.20x = 11,811.30 × 2,942.64
  4. Step 4: Simplify right side
    7,873.20x = 34,756,403.83
  5. Step 5: Solve for x
    x = 34,756,403.83/7,873.20
  6. Step 6: Final answer
    x = 4,414.52

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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.