Home / 7,886.97-11,831.09-2,621.79

Finding the Fourth Proportional to 7,886.97, 11,831.09 and 2,621.79

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Solution

The fourth proportional to 7,886.97, 11,831.09 and 2,621.79 is: 3,932.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.97 : 11,831.09 = 2,621.79 : x
  2. Step 2: Convert to fraction form
    7,886.97/11,831.09 = 2,621.79/x
  3. Step 3: Cross multiply
    7,886.97x = 11,831.09 × 2,621.79
  4. Step 4: Simplify right side
    7,886.97x = 31,018,620.34
  5. Step 5: Solve for x
    x = 31,018,620.34/7,886.97
  6. Step 6: Final answer
    x = 3,932.89

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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.