Home / 2,469.20-3,407.64-1,421.44

Finding the Fourth Proportional to 2,469.20, 3,407.64 and 1,421.44

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Solution

The fourth proportional to 2,469.20, 3,407.64 and 1,421.44 is: 1,961.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,469.20 : 3,407.64 = 1,421.44 : x
  2. Step 2: Convert to fraction form
    2,469.20/3,407.64 = 1,421.44/x
  3. Step 3: Cross multiply
    2,469.20x = 3,407.64 × 1,421.44
  4. Step 4: Simplify right side
    2,469.20x = 4,843,755.80
  5. Step 5: Solve for x
    x = 4,843,755.80/2,469.20
  6. Step 6: Final answer
    x = 1,961.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.