Home / 3,914.60-5,402.12-2,146.23

Finding the Fourth Proportional to 3,914.60, 5,402.12 and 2,146.23

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Solution

The fourth proportional to 3,914.60, 5,402.12 and 2,146.23 is: 2,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.60 : 5,402.12 = 2,146.23 : x
  2. Step 2: Convert to fraction form
    3,914.60/5,402.12 = 2,146.23/x
  3. Step 3: Cross multiply
    3,914.60x = 5,402.12 × 2,146.23
  4. Step 4: Simplify right side
    3,914.60x = 11,594,181.28
  5. Step 5: Solve for x
    x = 11,594,181.28/3,914.60
  6. Step 6: Final answer
    x = 2,961.78

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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.