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Finding the Fourth Proportional to 3,993.97, 5,499.13 and 3,395.28

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Solution

The fourth proportional to 3,993.97, 5,499.13 and 3,395.28 is: 4,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.97 : 5,499.13 = 3,395.28 : x
  2. Step 2: Convert to fraction form
    3,993.97/5,499.13 = 3,395.28/x
  3. Step 3: Cross multiply
    3,993.97x = 5,499.13 × 3,395.28
  4. Step 4: Simplify right side
    3,993.97x = 18,671,069.13
  5. Step 5: Solve for x
    x = 18,671,069.13/3,993.97
  6. Step 6: Final answer
    x = 4,674.82

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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.