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Finding the Fourth Proportional to 8,813.67, 12,163.25 and 5,276.20

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Solution

The fourth proportional to 8,813.67, 12,163.25 and 5,276.20 is: 7,281.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.67 : 12,163.25 = 5,276.20 : x
  2. Step 2: Convert to fraction form
    8,813.67/12,163.25 = 5,276.20/x
  3. Step 3: Cross multiply
    8,813.67x = 12,163.25 × 5,276.20
  4. Step 4: Simplify right side
    8,813.67x = 64,175,682.86
  5. Step 5: Solve for x
    x = 64,175,682.86/8,813.67
  6. Step 6: Final answer
    x = 7,281.38

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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.