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Finding the Fourth Proportional to 8,605.34, 12,897.07 and 3,927.89

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Solution

The fourth proportional to 8,605.34, 12,897.07 and 3,927.89 is: 5,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.34 : 12,897.07 = 3,927.89 : x
  2. Step 2: Convert to fraction form
    8,605.34/12,897.07 = 3,927.89/x
  3. Step 3: Cross multiply
    8,605.34x = 12,897.07 × 3,927.89
  4. Step 4: Simplify right side
    8,605.34x = 50,658,316.80
  5. Step 5: Solve for x
    x = 50,658,316.80/8,605.34
  6. Step 6: Final answer
    x = 5,886.85

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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.