Home / 6,890.33-9,508.85-3,906.06

Finding the Fourth Proportional to 6,890.33, 9,508.85 and 3,906.06

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Solution

The fourth proportional to 6,890.33, 9,508.85 and 3,906.06 is: 5,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.33 : 9,508.85 = 3,906.06 : x
  2. Step 2: Convert to fraction form
    6,890.33/9,508.85 = 3,906.06/x
  3. Step 3: Cross multiply
    6,890.33x = 9,508.85 × 3,906.06
  4. Step 4: Simplify right side
    6,890.33x = 37,142,098.09
  5. Step 5: Solve for x
    x = 37,142,098.09/6,890.33
  6. Step 6: Final answer
    x = 5,390.47

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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.