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Finding the Fourth Proportional to 8,867.75, 12,234.05 and 5,089.55

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Solution

The fourth proportional to 8,867.75, 12,234.05 and 5,089.55 is: 7,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.75 : 12,234.05 = 5,089.55 : x
  2. Step 2: Convert to fraction form
    8,867.75/12,234.05 = 5,089.55/x
  3. Step 3: Cross multiply
    8,867.75x = 12,234.05 × 5,089.55
  4. Step 4: Simplify right side
    8,867.75x = 62,265,722.56
  5. Step 5: Solve for x
    x = 62,265,722.56/8,867.75
  6. Step 6: Final answer
    x = 7,021.60

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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.