Home / 2,175.21-3,262.80-531.78

Finding the Fourth Proportional to 2,175.21, 3,262.80 and 531.78

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Solution

The fourth proportional to 2,175.21, 3,262.80 and 531.78 is: 797.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.21 : 3,262.80 = 531.78 : x
  2. Step 2: Convert to fraction form
    2,175.21/3,262.80 = 531.78/x
  3. Step 3: Cross multiply
    2,175.21x = 3,262.80 × 531.78
  4. Step 4: Simplify right side
    2,175.21x = 1,735,091.78
  5. Step 5: Solve for x
    x = 1,735,091.78/2,175.21
  6. Step 6: Final answer
    x = 797.67

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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.