Home / 1,449.12-2,174.28-799.80

Finding the Fourth Proportional to 1,449.12, 2,174.28 and 799.80

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Solution

The fourth proportional to 1,449.12, 2,174.28 and 799.80 is: 1,200.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.12 : 2,174.28 = 799.80 : x
  2. Step 2: Convert to fraction form
    1,449.12/2,174.28 = 799.80/x
  3. Step 3: Cross multiply
    1,449.12x = 2,174.28 × 799.80
  4. Step 4: Simplify right side
    1,449.12x = 1,738,989.14
  5. Step 5: Solve for x
    x = 1,738,989.14/1,449.12
  6. Step 6: Final answer
    x = 1,200.03

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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.