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Finding the Fourth Proportional to 8,625.67, 12,997.18 and 7,099.90

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Solution

The fourth proportional to 8,625.67, 12,997.18 and 7,099.90 is: 10,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.67 : 12,997.18 = 7,099.90 : x
  2. Step 2: Convert to fraction form
    8,625.67/12,997.18 = 7,099.90/x
  3. Step 3: Cross multiply
    8,625.67x = 12,997.18 × 7,099.90
  4. Step 4: Simplify right side
    8,625.67x = 92,278,678.28
  5. Step 5: Solve for x
    x = 92,278,678.28/8,625.67
  6. Step 6: Final answer
    x = 10,698.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.