Home / 6,689.70-9,231.62-3,857.04

Finding the Fourth Proportional to 6,689.70, 9,231.62 and 3,857.04

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Solution

The fourth proportional to 6,689.70, 9,231.62 and 3,857.04 is: 5,322.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.70 : 9,231.62 = 3,857.04 : x
  2. Step 2: Convert to fraction form
    6,689.70/9,231.62 = 3,857.04/x
  3. Step 3: Cross multiply
    6,689.70x = 9,231.62 × 3,857.04
  4. Step 4: Simplify right side
    6,689.70x = 35,606,727.60
  5. Step 5: Solve for x
    x = 35,606,727.60/6,689.70
  6. Step 6: Final answer
    x = 5,322.62

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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.