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Finding the Fourth Proportional to 7,221.81, 10,833.80 and 3,061.83

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Solution

The fourth proportional to 7,221.81, 10,833.80 and 3,061.83 is: 4,593.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.81 : 10,833.80 = 3,061.83 : x
  2. Step 2: Convert to fraction form
    7,221.81/10,833.80 = 3,061.83/x
  3. Step 3: Cross multiply
    7,221.81x = 10,833.80 × 3,061.83
  4. Step 4: Simplify right side
    7,221.81x = 33,171,253.85
  5. Step 5: Solve for x
    x = 33,171,253.85/7,221.81
  6. Step 6: Final answer
    x = 4,593.21

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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.