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Finding the Fourth Proportional to 4,990.99, 6,883.19 and 3,995.90

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Solution

The fourth proportional to 4,990.99, 6,883.19 and 3,995.90 is: 5,510.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.99 : 6,883.19 = 3,995.90 : x
  2. Step 2: Convert to fraction form
    4,990.99/6,883.19 = 3,995.90/x
  3. Step 3: Cross multiply
    4,990.99x = 6,883.19 × 3,995.90
  4. Step 4: Simplify right side
    4,990.99x = 27,504,551.13
  5. Step 5: Solve for x
    x = 27,504,551.13/4,990.99
  6. Step 6: Final answer
    x = 5,510.84

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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.