Home / 6,981.69-9,634.68-3,998.07

Finding the Fourth Proportional to 6,981.69, 9,634.68 and 3,998.07

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Solution

The fourth proportional to 6,981.69, 9,634.68 and 3,998.07 is: 5,517.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.69 : 9,634.68 = 3,998.07 : x
  2. Step 2: Convert to fraction form
    6,981.69/9,634.68 = 3,998.07/x
  3. Step 3: Cross multiply
    6,981.69x = 9,634.68 × 3,998.07
  4. Step 4: Simplify right side
    6,981.69x = 38,520,125.07
  5. Step 5: Solve for x
    x = 38,520,125.07/6,981.69
  6. Step 6: Final answer
    x = 5,517.31

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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.