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Finding the Fourth Proportional to 8,791.34, 13,189.16 and 6,717.74

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Solution

The fourth proportional to 8,791.34, 13,189.16 and 6,717.74 is: 10,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.34 : 13,189.16 = 6,717.74 : x
  2. Step 2: Convert to fraction form
    8,791.34/13,189.16 = 6,717.74/x
  3. Step 3: Cross multiply
    8,791.34x = 13,189.16 × 6,717.74
  4. Step 4: Simplify right side
    8,791.34x = 88,601,298.55
  5. Step 5: Solve for x
    x = 88,601,298.55/8,791.34
  6. Step 6: Final answer
    x = 10,078.25

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1.5x scale

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.