Home / 6,890.67-9,508.74-3,906.33

Finding the Fourth Proportional to 6,890.67, 9,508.74 and 3,906.33

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Solution

The fourth proportional to 6,890.67, 9,508.74 and 3,906.33 is: 5,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.67 : 9,508.74 = 3,906.33 : x
  2. Step 2: Convert to fraction form
    6,890.67/9,508.74 = 3,906.33/x
  3. Step 3: Cross multiply
    6,890.67x = 9,508.74 × 3,906.33
  4. Step 4: Simplify right side
    6,890.67x = 37,144,247.99
  5. Step 5: Solve for x
    x = 37,144,247.99/6,890.67
  6. Step 6: Final answer
    x = 5,390.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.