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Finding the Fourth Proportional to 6,790.39, 9,371.00 and 3,806.20

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Solution

The fourth proportional to 6,790.39, 9,371.00 and 3,806.20 is: 5,252.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,790.39 : 9,371.00 = 3,806.20 : x
  2. Step 2: Convert to fraction form
    6,790.39/9,371.00 = 3,806.20/x
  3. Step 3: Cross multiply
    6,790.39x = 9,371.00 × 3,806.20
  4. Step 4: Simplify right side
    6,790.39x = 35,667,886.29
  5. Step 5: Solve for x
    x = 35,667,886.29/6,790.39
  6. Step 6: Final answer
    x = 5,252.70

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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.