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Finding the Fourth Proportional to 7,221.43, 10,811.07 and 6,471.10

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Solution

The fourth proportional to 7,221.43, 10,811.07 and 6,471.10 is: 9,687.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.43 : 10,811.07 = 6,471.10 : x
  2. Step 2: Convert to fraction form
    7,221.43/10,811.07 = 6,471.10/x
  3. Step 3: Cross multiply
    7,221.43x = 10,811.07 × 6,471.10
  4. Step 4: Simplify right side
    7,221.43x = 69,959,515.08
  5. Step 5: Solve for x
    x = 69,959,515.08/7,221.43
  6. Step 6: Final answer
    x = 9,687.76

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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.