Home / 6,511.20-9,767.70-2,561.70

Finding the Fourth Proportional to 6,511.20, 9,767.70 and 2,561.70

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Solution

The fourth proportional to 6,511.20, 9,767.70 and 2,561.70 is: 3,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.20 : 9,767.70 = 2,561.70 : x
  2. Step 2: Convert to fraction form
    6,511.20/9,767.70 = 2,561.70/x
  3. Step 3: Cross multiply
    6,511.20x = 9,767.70 × 2,561.70
  4. Step 4: Simplify right side
    6,511.20x = 25,021,917.09
  5. Step 5: Solve for x
    x = 25,021,917.09/6,511.20
  6. Step 6: Final answer
    x = 3,842.90

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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.