Home / 4,320.69-6,481.85-2,128.29

Finding the Fourth Proportional to 4,320.69, 6,481.85 and 2,128.29

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Solution

The fourth proportional to 4,320.69, 6,481.85 and 2,128.29 is: 3,192.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,320.69 : 6,481.85 = 2,128.29 : x
  2. Step 2: Convert to fraction form
    4,320.69/6,481.85 = 2,128.29/x
  3. Step 3: Cross multiply
    4,320.69x = 6,481.85 × 2,128.29
  4. Step 4: Simplify right side
    4,320.69x = 13,795,245.90
  5. Step 5: Solve for x
    x = 13,795,245.90/4,320.69
  6. Step 6: Final answer
    x = 3,192.83

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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.