Home / 6,819.12-10,228.41-2,138.40

Finding the Fourth Proportional to 6,819.12, 10,228.41 and 2,138.40

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Solution

The fourth proportional to 6,819.12, 10,228.41 and 2,138.40 is: 3,207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,819.12 : 10,228.41 = 2,138.40 : x
  2. Step 2: Convert to fraction form
    6,819.12/10,228.41 = 2,138.40/x
  3. Step 3: Cross multiply
    6,819.12x = 10,228.41 × 2,138.40
  4. Step 4: Simplify right side
    6,819.12x = 21,872,431.94
  5. Step 5: Solve for x
    x = 21,872,431.94/6,819.12
  6. Step 6: Final answer
    x = 3,207.52

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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.