Home / 3,946.20-5,445.72-2,177.84

Finding the Fourth Proportional to 3,946.20, 5,445.72 and 2,177.84

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Solution

The fourth proportional to 3,946.20, 5,445.72 and 2,177.84 is: 3,005.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.20 : 5,445.72 = 2,177.84 : x
  2. Step 2: Convert to fraction form
    3,946.20/5,445.72 = 2,177.84/x
  3. Step 3: Cross multiply
    3,946.20x = 5,445.72 × 2,177.84
  4. Step 4: Simplify right side
    3,946.20x = 11,859,879.62
  5. Step 5: Solve for x
    x = 11,859,879.62/3,946.20
  6. Step 6: Final answer
    x = 3,005.39

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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.