Home / 8,112.72-12,169.80-6,265.20

Finding the Fourth Proportional to 8,112.72, 12,169.80 and 6,265.20

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Solution

The fourth proportional to 8,112.72, 12,169.80 and 6,265.20 is: 9,398.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.72 : 12,169.80 = 6,265.20 : x
  2. Step 2: Convert to fraction form
    8,112.72/12,169.80 = 6,265.20/x
  3. Step 3: Cross multiply
    8,112.72x = 12,169.80 × 6,265.20
  4. Step 4: Simplify right side
    8,112.72x = 76,246,230.96
  5. Step 5: Solve for x
    x = 76,246,230.96/8,112.72
  6. Step 6: Final answer
    x = 9,398.36

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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.