Home / 6,891.12-10,335.32-1,960.81

Finding the Fourth Proportional to 6,891.12, 10,335.32 and 1,960.81

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Solution

The fourth proportional to 6,891.12, 10,335.32 and 1,960.81 is: 2,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.12 : 10,335.32 = 1,960.81 : x
  2. Step 2: Convert to fraction form
    6,891.12/10,335.32 = 1,960.81/x
  3. Step 3: Cross multiply
    6,891.12x = 10,335.32 × 1,960.81
  4. Step 4: Simplify right side
    6,891.12x = 20,265,542.23
  5. Step 5: Solve for x
    x = 20,265,542.23/6,891.12
  6. Step 6: Final answer
    x = 2,940.82

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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.