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Finding the Fourth Proportional to 8,633.62, 12,950.49 and 2,790.23

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Solution

The fourth proportional to 8,633.62, 12,950.49 and 2,790.23 is: 4,185.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.62 : 12,950.49 = 2,790.23 : x
  2. Step 2: Convert to fraction form
    8,633.62/12,950.49 = 2,790.23/x
  3. Step 3: Cross multiply
    8,633.62x = 12,950.49 × 2,790.23
  4. Step 4: Simplify right side
    8,633.62x = 36,134,767.01
  5. Step 5: Solve for x
    x = 36,134,767.01/8,633.62
  6. Step 6: Final answer
    x = 4,185.36

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1.5x scale

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.