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Finding the Fourth Proportional to 8,935.62, 12,346.50 and 8,620.26

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Solution

The fourth proportional to 8,935.62, 12,346.50 and 8,620.26 is: 11,910.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.62 : 12,346.50 = 8,620.26 : x
  2. Step 2: Convert to fraction form
    8,935.62/12,346.50 = 8,620.26/x
  3. Step 3: Cross multiply
    8,935.62x = 12,346.50 × 8,620.26
  4. Step 4: Simplify right side
    8,935.62x = 106,430,040.09
  5. Step 5: Solve for x
    x = 106,430,040.09/8,935.62
  6. Step 6: Final answer
    x = 11,910.76

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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.