Home / 9,212.55-13,819.83-2,639.80

Finding the Fourth Proportional to 9,212.55, 13,819.83 and 2,639.80

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Solution

The fourth proportional to 9,212.55, 13,819.83 and 2,639.80 is: 3,959.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,212.55 : 13,819.83 = 2,639.80 : x
  2. Step 2: Convert to fraction form
    9,212.55/13,819.83 = 2,639.80/x
  3. Step 3: Cross multiply
    9,212.55x = 13,819.83 × 2,639.80
  4. Step 4: Simplify right side
    9,212.55x = 36,481,587.23
  5. Step 5: Solve for x
    x = 36,481,587.23/9,212.55
  6. Step 6: Final answer
    x = 3,959.99

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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.