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Finding the Fourth Proportional to 8,930.34, 13,402.35 and 3,739.86

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Solution

The fourth proportional to 8,930.34, 13,402.35 and 3,739.86 is: 5,612.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.34 : 13,402.35 = 3,739.86 : x
  2. Step 2: Convert to fraction form
    8,930.34/13,402.35 = 3,739.86/x
  3. Step 3: Cross multiply
    8,930.34x = 13,402.35 × 3,739.86
  4. Step 4: Simplify right side
    8,930.34x = 50,122,912.67
  5. Step 5: Solve for x
    x = 50,122,912.67/8,930.34
  6. Step 6: Final answer
    x = 5,612.65

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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.