Home / 7,879.12-11,818.36-1,956.02

Finding the Fourth Proportional to 7,879.12, 11,818.36 and 1,956.02

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Solution

The fourth proportional to 7,879.12, 11,818.36 and 1,956.02 is: 2,933.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.12 : 11,818.36 = 1,956.02 : x
  2. Step 2: Convert to fraction form
    7,879.12/11,818.36 = 1,956.02/x
  3. Step 3: Cross multiply
    7,879.12x = 11,818.36 × 1,956.02
  4. Step 4: Simplify right side
    7,879.12x = 23,116,891.88
  5. Step 5: Solve for x
    x = 23,116,891.88/7,879.12
  6. Step 6: Final answer
    x = 2,933.94

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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.