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Finding the Fourth Proportional to 8,811.06, 13,212.41 and 5,114.43

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Solution

The fourth proportional to 8,811.06, 13,212.41 and 5,114.43 is: 7,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.06 : 13,212.41 = 5,114.43 : x
  2. Step 2: Convert to fraction form
    8,811.06/13,212.41 = 5,114.43/x
  3. Step 3: Cross multiply
    8,811.06x = 13,212.41 × 5,114.43
  4. Step 4: Simplify right side
    8,811.06x = 67,573,920.50
  5. Step 5: Solve for x
    x = 67,573,920.50/8,811.06
  6. Step 6: Final answer
    x = 7,669.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.