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Finding the Fourth Proportional to 7,493.80, 11,247.90 and 3,800.20

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Solution

The fourth proportional to 7,493.80, 11,247.90 and 3,800.20 is: 5,703.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,493.80 : 11,247.90 = 3,800.20 : x
  2. Step 2: Convert to fraction form
    7,493.80/11,247.90 = 3,800.20/x
  3. Step 3: Cross multiply
    7,493.80x = 11,247.90 × 3,800.20
  4. Step 4: Simplify right side
    7,493.80x = 42,744,269.58
  5. Step 5: Solve for x
    x = 42,744,269.58/7,493.80
  6. Step 6: Final answer
    x = 5,703.95

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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.