Home / 3,999.36-5,519.20-2,427.28

Finding the Fourth Proportional to 3,999.36, 5,519.20 and 2,427.28

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Solution

The fourth proportional to 3,999.36, 5,519.20 and 2,427.28 is: 3,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.36 : 5,519.20 = 2,427.28 : x
  2. Step 2: Convert to fraction form
    3,999.36/5,519.20 = 2,427.28/x
  3. Step 3: Cross multiply
    3,999.36x = 5,519.20 × 2,427.28
  4. Step 4: Simplify right side
    3,999.36x = 13,396,643.78
  5. Step 5: Solve for x
    x = 13,396,643.78/3,999.36
  6. Step 6: Final answer
    x = 3,349.70

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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.