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Finding the Fourth Proportional to 8,768.66, 12,100.79 and 5,230.98

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Solution

The fourth proportional to 8,768.66, 12,100.79 and 5,230.98 is: 7,218.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.66 : 12,100.79 = 5,230.98 : x
  2. Step 2: Convert to fraction form
    8,768.66/12,100.79 = 5,230.98/x
  3. Step 3: Cross multiply
    8,768.66x = 12,100.79 × 5,230.98
  4. Step 4: Simplify right side
    8,768.66x = 63,299,003.55
  5. Step 5: Solve for x
    x = 63,299,003.55/8,768.66
  6. Step 6: Final answer
    x = 7,218.78

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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.