Home / 6,781.50-9,360.36-3,949.43

Finding the Fourth Proportional to 6,781.50, 9,360.36 and 3,949.43

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Solution

The fourth proportional to 6,781.50, 9,360.36 and 3,949.43 is: 5,451.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.50 : 9,360.36 = 3,949.43 : x
  2. Step 2: Convert to fraction form
    6,781.50/9,360.36 = 3,949.43/x
  3. Step 3: Cross multiply
    6,781.50x = 9,360.36 × 3,949.43
  4. Step 4: Simplify right side
    6,781.50x = 36,968,039.79
  5. Step 5: Solve for x
    x = 36,968,039.79/6,781.50
  6. Step 6: Final answer
    x = 5,451.31

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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.