Home / 8,682.28-13,008.30-5,211.88

Finding the Fourth Proportional to 8,682.28, 13,008.30 and 5,211.88

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Solution

The fourth proportional to 8,682.28, 13,008.30 and 5,211.88 is: 7,808.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,682.28 : 13,008.30 = 5,211.88 : x
  2. Step 2: Convert to fraction form
    8,682.28/13,008.30 = 5,211.88/x
  3. Step 3: Cross multiply
    8,682.28x = 13,008.30 × 5,211.88
  4. Step 4: Simplify right side
    8,682.28x = 67,797,698.60
  5. Step 5: Solve for x
    x = 67,797,698.60/8,682.28
  6. Step 6: Final answer
    x = 7,808.74

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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.