Home / 3,997.30-5,519.74-2,507.78

Finding the Fourth Proportional to 3,997.30, 5,519.74 and 2,507.78

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Solution

The fourth proportional to 3,997.30, 5,519.74 and 2,507.78 is: 3,462.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.30 : 5,519.74 = 2,507.78 : x
  2. Step 2: Convert to fraction form
    3,997.30/5,519.74 = 2,507.78/x
  3. Step 3: Cross multiply
    3,997.30x = 5,519.74 × 2,507.78
  4. Step 4: Simplify right side
    3,997.30x = 13,842,293.58
  5. Step 5: Solve for x
    x = 13,842,293.58/3,997.30
  6. Step 6: Final answer
    x = 3,462.91

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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.