Home / 9,213.90-13,820.97-2,640.30

Finding the Fourth Proportional to 9,213.90, 13,820.97 and 2,640.30

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Solution

The fourth proportional to 9,213.90, 13,820.97 and 2,640.30 is: 3,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,213.90 : 13,820.97 = 2,640.30 : x
  2. Step 2: Convert to fraction form
    9,213.90/13,820.97 = 2,640.30/x
  3. Step 3: Cross multiply
    9,213.90x = 13,820.97 × 2,640.30
  4. Step 4: Simplify right side
    9,213.90x = 36,491,507.09
  5. Step 5: Solve for x
    x = 36,491,507.09/9,213.90
  6. Step 6: Final answer
    x = 3,960.48

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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.