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Finding the Fourth Proportional to 8,786.71, 12,125.34 and 5,247.82

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Solution

The fourth proportional to 8,786.71, 12,125.34 and 5,247.82 is: 7,241.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.71 : 12,125.34 = 5,247.82 : x
  2. Step 2: Convert to fraction form
    8,786.71/12,125.34 = 5,247.82/x
  3. Step 3: Cross multiply
    8,786.71x = 12,125.34 × 5,247.82
  4. Step 4: Simplify right side
    8,786.71x = 63,631,601.76
  5. Step 5: Solve for x
    x = 63,631,601.76/8,786.71
  6. Step 6: Final answer
    x = 7,241.80

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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.