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Finding the Fourth Proportional to 7,200.45, 10,800.46 and 3,934.23

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Solution

The fourth proportional to 7,200.45, 10,800.46 and 3,934.23 is: 5,901.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.45 : 10,800.46 = 3,934.23 : x
  2. Step 2: Convert to fraction form
    7,200.45/10,800.46 = 3,934.23/x
  3. Step 3: Cross multiply
    7,200.45x = 10,800.46 × 3,934.23
  4. Step 4: Simplify right side
    7,200.45x = 42,491,493.75
  5. Step 5: Solve for x
    x = 42,491,493.75/7,200.45
  6. Step 6: Final answer
    x = 5,901.23

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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.