Home / 7,886.91-11,831.01-2,621.73

Finding the Fourth Proportional to 7,886.91, 11,831.01 and 2,621.73

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Solution

The fourth proportional to 7,886.91, 11,831.01 and 2,621.73 is: 3,932.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.91 : 11,831.01 = 2,621.73 : x
  2. Step 2: Convert to fraction form
    7,886.91/11,831.01 = 2,621.73/x
  3. Step 3: Cross multiply
    7,886.91x = 11,831.01 × 2,621.73
  4. Step 4: Simplify right side
    7,886.91x = 31,017,713.85
  5. Step 5: Solve for x
    x = 31,017,713.85/7,886.91
  6. Step 6: Final answer
    x = 3,932.81

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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.