Home / 7,818.16-11,731.86-2,891.26

Finding the Fourth Proportional to 7,818.16, 11,731.86 and 2,891.26

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Solution

The fourth proportional to 7,818.16, 11,731.86 and 2,891.26 is: 4,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.16 : 11,731.86 = 2,891.26 : x
  2. Step 2: Convert to fraction form
    7,818.16/11,731.86 = 2,891.26/x
  3. Step 3: Cross multiply
    7,818.16x = 11,731.86 × 2,891.26
  4. Step 4: Simplify right side
    7,818.16x = 33,919,857.54
  5. Step 5: Solve for x
    x = 33,919,857.54/7,818.16
  6. Step 6: Final answer
    x = 4,338.60

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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.