Home / 3,638.05-5,015.21-2,892.31

Finding the Fourth Proportional to 3,638.05, 5,015.21 and 2,892.31

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Solution

The fourth proportional to 3,638.05, 5,015.21 and 2,892.31 is: 3,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.05 : 5,015.21 = 2,892.31 : x
  2. Step 2: Convert to fraction form
    3,638.05/5,015.21 = 2,892.31/x
  3. Step 3: Cross multiply
    3,638.05x = 5,015.21 × 2,892.31
  4. Step 4: Simplify right side
    3,638.05x = 14,505,542.04
  5. Step 5: Solve for x
    x = 14,505,542.04/3,638.05
  6. Step 6: Final answer
    x = 3,987.18

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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.