Home / 8,538.21-12,806.84-3,275.74

Finding the Fourth Proportional to 8,538.21, 12,806.84 and 3,275.74

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Solution

The fourth proportional to 8,538.21, 12,806.84 and 3,275.74 is: 4,913.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.21 : 12,806.84 = 3,275.74 : x
  2. Step 2: Convert to fraction form
    8,538.21/12,806.84 = 3,275.74/x
  3. Step 3: Cross multiply
    8,538.21x = 12,806.84 × 3,275.74
  4. Step 4: Simplify right side
    8,538.21x = 41,951,878.06
  5. Step 5: Solve for x
    x = 41,951,878.06/8,538.21
  6. Step 6: Final answer
    x = 4,913.43

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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.