Home / 7,932.27-11,891.70-3,978.66

Finding the Fourth Proportional to 7,932.27, 11,891.70 and 3,978.66

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Solution

The fourth proportional to 7,932.27, 11,891.70 and 3,978.66 is: 5,964.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,932.27 : 11,891.70 = 3,978.66 : x
  2. Step 2: Convert to fraction form
    7,932.27/11,891.70 = 3,978.66/x
  3. Step 3: Cross multiply
    7,932.27x = 11,891.70 × 3,978.66
  4. Step 4: Simplify right side
    7,932.27x = 47,313,031.12
  5. Step 5: Solve for x
    x = 47,313,031.12/7,932.27
  6. Step 6: Final answer
    x = 5,964.63

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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.