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Finding the Fourth Proportional to 8,308.58, 12,457.20 and 3,110

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Solution

The fourth proportional to 8,308.58, 12,457.20 and 3,110 is: 4,662.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.58 : 12,457.20 = 3,110 : x
  2. Step 2: Convert to fraction form
    8,308.58/12,457.20 = 3,110/x
  3. Step 3: Cross multiply
    8,308.58x = 12,457.20 × 3,110
  4. Step 4: Simplify right side
    8,308.58x = 38,741,892
  5. Step 5: Solve for x
    x = 38,741,892/8,308.58
  6. Step 6: Final answer
    x = 4,662.88

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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.