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Finding the Fourth Proportional to 8,763.66, 12,079.38 and 6,212.25

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Solution

The fourth proportional to 8,763.66, 12,079.38 and 6,212.25 is: 8,562.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.66 : 12,079.38 = 6,212.25 : x
  2. Step 2: Convert to fraction form
    8,763.66/12,079.38 = 6,212.25/x
  3. Step 3: Cross multiply
    8,763.66x = 12,079.38 × 6,212.25
  4. Step 4: Simplify right side
    8,763.66x = 75,040,128.41
  5. Step 5: Solve for x
    x = 75,040,128.41/8,763.66
  6. Step 6: Final answer
    x = 8,562.65

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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.