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Finding the Fourth Proportional to 6,790.66, 9,371.67 and 3,959.12

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Solution

The fourth proportional to 6,790.66, 9,371.67 and 3,959.12 is: 5,463.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,790.66 : 9,371.67 = 3,959.12 : x
  2. Step 2: Convert to fraction form
    6,790.66/9,371.67 = 3,959.12/x
  3. Step 3: Cross multiply
    6,790.66x = 9,371.67 × 3,959.12
  4. Step 4: Simplify right side
    6,790.66x = 37,103,566.13
  5. Step 5: Solve for x
    x = 37,103,566.13/6,790.66
  6. Step 6: Final answer
    x = 5,463.91

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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.