Home / 7,815.88-11,723.82-2,621.74

Finding the Fourth Proportional to 7,815.88, 11,723.82 and 2,621.74

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Solution

The fourth proportional to 7,815.88, 11,723.82 and 2,621.74 is: 3,932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.88 : 11,723.82 = 2,621.74 : x
  2. Step 2: Convert to fraction form
    7,815.88/11,723.82 = 2,621.74/x
  3. Step 3: Cross multiply
    7,815.88x = 11,723.82 × 2,621.74
  4. Step 4: Simplify right side
    7,815.88x = 30,736,807.85
  5. Step 5: Solve for x
    x = 30,736,807.85/7,815.88
  6. Step 6: Final answer
    x = 3,932.61

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Similar ratio
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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.