Home / 7,182.99-9,912.45-3,996.18

Finding the Fourth Proportional to 7,182.99, 9,912.45 and 3,996.18

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Solution

The fourth proportional to 7,182.99, 9,912.45 and 3,996.18 is: 5,514.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.99 : 9,912.45 = 3,996.18 : x
  2. Step 2: Convert to fraction form
    7,182.99/9,912.45 = 3,996.18/x
  3. Step 3: Cross multiply
    7,182.99x = 9,912.45 × 3,996.18
  4. Step 4: Simplify right side
    7,182.99x = 39,611,934.44
  5. Step 5: Solve for x
    x = 39,611,934.44/7,182.99
  6. Step 6: Final answer
    x = 5,514.69

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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.