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Finding the Fourth Proportional to 8,914.90, 12,304.63 and 5,930.86

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Solution

The fourth proportional to 8,914.90, 12,304.63 and 5,930.86 is: 8,185.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.90 : 12,304.63 = 5,930.86 : x
  2. Step 2: Convert to fraction form
    8,914.90/12,304.63 = 5,930.86/x
  3. Step 3: Cross multiply
    8,914.90x = 12,304.63 × 5,930.86
  4. Step 4: Simplify right side
    8,914.90x = 72,977,037.88
  5. Step 5: Solve for x
    x = 72,977,037.88/8,914.90
  6. Step 6: Final answer
    x = 8,185.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.