Home / 3,971.36-5,479.88-2,202.98

Finding the Fourth Proportional to 3,971.36, 5,479.88 and 2,202.98

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Solution

The fourth proportional to 3,971.36, 5,479.88 and 2,202.98 is: 3,039.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.36 : 5,479.88 = 2,202.98 : x
  2. Step 2: Convert to fraction form
    3,971.36/5,479.88 = 2,202.98/x
  3. Step 3: Cross multiply
    3,971.36x = 5,479.88 × 2,202.98
  4. Step 4: Simplify right side
    3,971.36x = 12,072,027.63
  5. Step 5: Solve for x
    x = 12,072,027.63/3,971.36
  6. Step 6: Final answer
    x = 3,039.77

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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.