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Finding the Fourth Proportional to 8,786.93, 12,125.43 and 5,009.56

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Solution

The fourth proportional to 8,786.93, 12,125.43 and 5,009.56 is: 6,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.93 : 12,125.43 = 5,009.56 : x
  2. Step 2: Convert to fraction form
    8,786.93/12,125.43 = 5,009.56/x
  3. Step 3: Cross multiply
    8,786.93x = 12,125.43 × 5,009.56
  4. Step 4: Simplify right side
    8,786.93x = 60,743,038.80
  5. Step 5: Solve for x
    x = 60,743,038.80/8,786.93
  6. Step 6: Final answer
    x = 6,912.89

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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.