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Finding the Fourth Proportional to 8,305.98, 12,459.30 and 3,309.30

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Solution

The fourth proportional to 8,305.98, 12,459.30 and 3,309.30 is: 4,964.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305.98 : 12,459.30 = 3,309.30 : x
  2. Step 2: Convert to fraction form
    8,305.98/12,459.30 = 3,309.30/x
  3. Step 3: Cross multiply
    8,305.98x = 12,459.30 × 3,309.30
  4. Step 4: Simplify right side
    8,305.98x = 41,231,561.49
  5. Step 5: Solve for x
    x = 41,231,561.49/8,305.98
  6. Step 6: Final answer
    x = 4,964.08

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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.