Home / 2,148.30-3,221.42-832.67

Finding the Fourth Proportional to 2,148.30, 3,221.42 and 832.67

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Solution

The fourth proportional to 2,148.30, 3,221.42 and 832.67 is: 1,248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.30 : 3,221.42 = 832.67 : x
  2. Step 2: Convert to fraction form
    2,148.30/3,221.42 = 832.67/x
  3. Step 3: Cross multiply
    2,148.30x = 3,221.42 × 832.67
  4. Step 4: Simplify right side
    2,148.30x = 2,682,363.68
  5. Step 5: Solve for x
    x = 2,682,363.68/2,148.30
  6. Step 6: Final answer
    x = 1,248.60

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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.