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Finding the Fourth Proportional to 2,362.80, 3,544.20 and 2,207.90

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Solution

The fourth proportional to 2,362.80, 3,544.20 and 2,207.90 is: 3,311.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,362.80 : 3,544.20 = 2,207.90 : x
  2. Step 2: Convert to fraction form
    2,362.80/3,544.20 = 2,207.90/x
  3. Step 3: Cross multiply
    2,362.80x = 3,544.20 × 2,207.90
  4. Step 4: Simplify right side
    2,362.80x = 7,825,221.46
  5. Step 5: Solve for x
    x = 7,825,221.46/2,362.80
  6. Step 6: Final answer
    x = 3,311.84

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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.