Home / 6,819.64-10,229.60-2,139.55

Finding the Fourth Proportional to 6,819.64, 10,229.60 and 2,139.55

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Solution

The fourth proportional to 6,819.64, 10,229.60 and 2,139.55 is: 3,209.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,819.64 : 10,229.60 = 2,139.55 : x
  2. Step 2: Convert to fraction form
    6,819.64/10,229.60 = 2,139.55/x
  3. Step 3: Cross multiply
    6,819.64x = 10,229.60 × 2,139.55
  4. Step 4: Simplify right side
    6,819.64x = 21,886,740.68
  5. Step 5: Solve for x
    x = 21,886,740.68/6,819.64
  6. Step 6: Final answer
    x = 3,209.37

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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.