Home / 1,449.70-2,170.86-799.72

Finding the Fourth Proportional to 1,449.70, 2,170.86 and 799.72

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Solution

The fourth proportional to 1,449.70, 2,170.86 and 799.72 is: 1,197.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.70 : 2,170.86 = 799.72 : x
  2. Step 2: Convert to fraction form
    1,449.70/2,170.86 = 799.72/x
  3. Step 3: Cross multiply
    1,449.70x = 2,170.86 × 799.72
  4. Step 4: Simplify right side
    1,449.70x = 1,736,080.16
  5. Step 5: Solve for x
    x = 1,736,080.16/1,449.70
  6. Step 6: Final answer
    x = 1,197.54

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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.