Home / 6,819.18-10,228.78-2,139.60

Finding the Fourth Proportional to 6,819.18, 10,228.78 and 2,139.60

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Solution

The fourth proportional to 6,819.18, 10,228.78 and 2,139.60 is: 3,209.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,819.18 : 10,228.78 = 2,139.60 : x
  2. Step 2: Convert to fraction form
    6,819.18/10,228.78 = 2,139.60/x
  3. Step 3: Cross multiply
    6,819.18x = 10,228.78 × 2,139.60
  4. Step 4: Simplify right side
    6,819.18x = 21,885,530.70
  5. Step 5: Solve for x
    x = 21,885,530.70/6,819.18
  6. Step 6: Final answer
    x = 3,209.41

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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.