Home / 7,886.47-11,831.94-3,209.84

Finding the Fourth Proportional to 7,886.47, 11,831.94 and 3,209.84

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Solution

The fourth proportional to 7,886.47, 11,831.94 and 3,209.84 is: 4,815.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.47 : 11,831.94 = 3,209.84 : x
  2. Step 2: Convert to fraction form
    7,886.47/11,831.94 = 3,209.84/x
  3. Step 3: Cross multiply
    7,886.47x = 11,831.94 × 3,209.84
  4. Step 4: Simplify right side
    7,886.47x = 37,978,602.09
  5. Step 5: Solve for x
    x = 37,978,602.09/7,886.47
  6. Step 6: Final answer
    x = 4,815.66

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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.