Home / 8,656.82-12,982.34-2,812

Finding the Fourth Proportional to 8,656.82, 12,982.34 and 2,812

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Solution

The fourth proportional to 8,656.82, 12,982.34 and 2,812 is: 4,217.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.82 : 12,982.34 = 2,812 : x
  2. Step 2: Convert to fraction form
    8,656.82/12,982.34 = 2,812/x
  3. Step 3: Cross multiply
    8,656.82x = 12,982.34 × 2,812
  4. Step 4: Simplify right side
    8,656.82x = 36,506,340.08
  5. Step 5: Solve for x
    x = 36,506,340.08/8,656.82
  6. Step 6: Final answer
    x = 4,217.06

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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.