Home / 3,970.70-5,479.54-2,202.30

Finding the Fourth Proportional to 3,970.70, 5,479.54 and 2,202.30

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Solution

The fourth proportional to 3,970.70, 5,479.54 and 2,202.30 is: 3,039.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.70 : 5,479.54 = 2,202.30 : x
  2. Step 2: Convert to fraction form
    3,970.70/5,479.54 = 2,202.30/x
  3. Step 3: Cross multiply
    3,970.70x = 5,479.54 × 2,202.30
  4. Step 4: Simplify right side
    3,970.70x = 12,067,590.94
  5. Step 5: Solve for x
    x = 12,067,590.94/3,970.70
  6. Step 6: Final answer
    x = 3,039.16

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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.