Home / 8,682.21-11,990.31-7,484.85

Finding the Fourth Proportional to 8,682.21, 11,990.31 and 7,484.85

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Solution

The fourth proportional to 8,682.21, 11,990.31 and 7,484.85 is: 10,336.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.21 : 11,990.31 = 7,484.85 : x
  2. Step 2: Convert to fraction form
    8,682.21/11,990.31 = 7,484.85/x
  3. Step 3: Cross multiply
    8,682.21x = 11,990.31 × 7,484.85
  4. Step 4: Simplify right side
    8,682.21x = 89,745,671.80
  5. Step 5: Solve for x
    x = 89,745,671.80/8,682.21
  6. Step 6: Final answer
    x = 10,336.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.