Home / 8,422.34-12,633.55-2,181.91

Finding the Fourth Proportional to 8,422.34, 12,633.55 and 2,181.91

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Solution

The fourth proportional to 8,422.34, 12,633.55 and 2,181.91 is: 3,272.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.34 : 12,633.55 = 2,181.91 : x
  2. Step 2: Convert to fraction form
    8,422.34/12,633.55 = 2,181.91/x
  3. Step 3: Cross multiply
    8,422.34x = 12,633.55 × 2,181.91
  4. Step 4: Simplify right side
    8,422.34x = 27,565,269.08
  5. Step 5: Solve for x
    x = 27,565,269.08/8,422.34
  6. Step 6: Final answer
    x = 3,272.88

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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.