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Finding the Fourth Proportional to 8,822.72, 12,172.08 and 6,305.12

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Solution

The fourth proportional to 8,822.72, 12,172.08 and 6,305.12 is: 8,698.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,822.72 : 12,172.08 = 6,305.12 : x
  2. Step 2: Convert to fraction form
    8,822.72/12,172.08 = 6,305.12/x
  3. Step 3: Cross multiply
    8,822.72x = 12,172.08 × 6,305.12
  4. Step 4: Simplify right side
    8,822.72x = 76,746,425.05
  5. Step 5: Solve for x
    x = 76,746,425.05/8,822.72
  6. Step 6: Final answer
    x = 8,698.73

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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.