Home / 8,272.09-12,390.31-3,882.97

Finding the Fourth Proportional to 8,272.09, 12,390.31 and 3,882.97

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Solution

The fourth proportional to 8,272.09, 12,390.31 and 3,882.97 is: 5,816.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.09 : 12,390.31 = 3,882.97 : x
  2. Step 2: Convert to fraction form
    8,272.09/12,390.31 = 3,882.97/x
  3. Step 3: Cross multiply
    8,272.09x = 12,390.31 × 3,882.97
  4. Step 4: Simplify right side
    8,272.09x = 48,111,161.34
  5. Step 5: Solve for x
    x = 48,111,161.34/8,272.09
  6. Step 6: Final answer
    x = 5,816.08

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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.