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Finding the Fourth Proportional to 8,617.34, 12,926.10 and 6,896.90

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Solution

The fourth proportional to 8,617.34, 12,926.10 and 6,896.90 is: 10,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.34 : 12,926.10 = 6,896.90 : x
  2. Step 2: Convert to fraction form
    8,617.34/12,926.10 = 6,896.90/x
  3. Step 3: Cross multiply
    8,617.34x = 12,926.10 × 6,896.90
  4. Step 4: Simplify right side
    8,617.34x = 89,150,019.09
  5. Step 5: Solve for x
    x = 89,150,019.09/8,617.34
  6. Step 6: Final answer
    x = 10,345.42

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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.