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Finding the Fourth Proportional to 8,811.87, 12,161.79 and 5,276.22

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Solution

The fourth proportional to 8,811.87, 12,161.79 and 5,276.22 is: 7,282.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.87 : 12,161.79 = 5,276.22 : x
  2. Step 2: Convert to fraction form
    8,811.87/12,161.79 = 5,276.22/x
  3. Step 3: Cross multiply
    8,811.87x = 12,161.79 × 5,276.22
  4. Step 4: Simplify right side
    8,811.87x = 64,168,279.63
  5. Step 5: Solve for x
    x = 64,168,279.63/8,811.87
  6. Step 6: Final answer
    x = 7,282.03

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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.