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Finding the Fourth Proportional to 8,191.69, 11,304.52 and 4,654.90

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Solution

The fourth proportional to 8,191.69, 11,304.52 and 4,654.90 is: 6,423.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.69 : 11,304.52 = 4,654.90 : x
  2. Step 2: Convert to fraction form
    8,191.69/11,304.52 = 4,654.90/x
  3. Step 3: Cross multiply
    8,191.69x = 11,304.52 × 4,654.90
  4. Step 4: Simplify right side
    8,191.69x = 52,621,410.15
  5. Step 5: Solve for x
    x = 52,621,410.15/8,191.69
  6. Step 6: Final answer
    x = 6,423.76

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Double scale
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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.