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Finding the Fourth Proportional to 8,910.81, 13,365 and 5,207.49

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Solution

The fourth proportional to 8,910.81, 13,365 and 5,207.49 is: 7,810.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.81 : 13,365 = 5,207.49 : x
  2. Step 2: Convert to fraction form
    8,910.81/13,365 = 5,207.49/x
  3. Step 3: Cross multiply
    8,910.81x = 13,365 × 5,207.49
  4. Step 4: Simplify right side
    8,910.81x = 69,598,103.85
  5. Step 5: Solve for x
    x = 69,598,103.85/8,910.81
  6. Step 6: Final answer
    x = 7,810.52

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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.