Home / 3,997.07-5,515.99-2,228.79

Finding the Fourth Proportional to 3,997.07, 5,515.99 and 2,228.79

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Solution

The fourth proportional to 3,997.07, 5,515.99 and 2,228.79 is: 3,075.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.07 : 5,515.99 = 2,228.79 : x
  2. Step 2: Convert to fraction form
    3,997.07/5,515.99 = 2,228.79/x
  3. Step 3: Cross multiply
    3,997.07x = 5,515.99 × 2,228.79
  4. Step 4: Simplify right side
    3,997.07x = 12,293,979.82
  5. Step 5: Solve for x
    x = 12,293,979.82/3,997.07
  6. Step 6: Final answer
    x = 3,075.75

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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.