Home / 6,514.66-8,990.40-3,998.16

Finding the Fourth Proportional to 6,514.66, 8,990.40 and 3,998.16

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Solution

The fourth proportional to 6,514.66, 8,990.40 and 3,998.16 is: 5,517.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,514.66 : 8,990.40 = 3,998.16 : x
  2. Step 2: Convert to fraction form
    6,514.66/8,990.40 = 3,998.16/x
  3. Step 3: Cross multiply
    6,514.66x = 8,990.40 × 3,998.16
  4. Step 4: Simplify right side
    6,514.66x = 35,945,057.66
  5. Step 5: Solve for x
    x = 35,945,057.66/6,514.66
  6. Step 6: Final answer
    x = 5,517.56

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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.