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Finding the Fourth Proportional to 8,791.79, 12,133.24 and 5,768.72

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Solution

The fourth proportional to 8,791.79, 12,133.24 and 5,768.72 is: 7,961.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.79 : 12,133.24 = 5,768.72 : x
  2. Step 2: Convert to fraction form
    8,791.79/12,133.24 = 5,768.72/x
  3. Step 3: Cross multiply
    8,791.79x = 12,133.24 × 5,768.72
  4. Step 4: Simplify right side
    8,791.79x = 69,993,267.11
  5. Step 5: Solve for x
    x = 69,993,267.11/8,791.79
  6. Step 6: Final answer
    x = 7,961.21

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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.