Home / 7,821.86-11,732.46-2,891.39

Finding the Fourth Proportional to 7,821.86, 11,732.46 and 2,891.39

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Solution

The fourth proportional to 7,821.86, 11,732.46 and 2,891.39 is: 4,336.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.86 : 11,732.46 = 2,891.39 : x
  2. Step 2: Convert to fraction form
    7,821.86/11,732.46 = 2,891.39/x
  3. Step 3: Cross multiply
    7,821.86x = 11,732.46 × 2,891.39
  4. Step 4: Simplify right side
    7,821.86x = 33,923,058.86
  5. Step 5: Solve for x
    x = 33,923,058.86/7,821.86
  6. Step 6: Final answer
    x = 4,336.96

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1.5x scale

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.