Home / 6,890.28-9,508.04-3,906.57

Finding the Fourth Proportional to 6,890.28, 9,508.04 and 3,906.57

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Solution

The fourth proportional to 6,890.28, 9,508.04 and 3,906.57 is: 5,390.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.28 : 9,508.04 = 3,906.57 : x
  2. Step 2: Convert to fraction form
    6,890.28/9,508.04 = 3,906.57/x
  3. Step 3: Cross multiply
    6,890.28x = 9,508.04 × 3,906.57
  4. Step 4: Simplify right side
    6,890.28x = 37,143,804.29
  5. Step 5: Solve for x
    x = 37,143,804.29/6,890.28
  6. Step 6: Final answer
    x = 5,390.75

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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.