Home / 3,946.19-5,445.69-2,177.75

Finding the Fourth Proportional to 3,946.19, 5,445.69 and 2,177.75

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Solution

The fourth proportional to 3,946.19, 5,445.69 and 2,177.75 is: 3,005.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.19 : 5,445.69 = 2,177.75 : x
  2. Step 2: Convert to fraction form
    3,946.19/5,445.69 = 2,177.75/x
  3. Step 3: Cross multiply
    3,946.19x = 5,445.69 × 2,177.75
  4. Step 4: Simplify right side
    3,946.19x = 11,859,351.40
  5. Step 5: Solve for x
    x = 11,859,351.40/3,946.19
  6. Step 6: Final answer
    x = 3,005.27

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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.