Home / 3,638.48-5,015.82-2,892.74

Finding the Fourth Proportional to 3,638.48, 5,015.82 and 2,892.74

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Solution

The fourth proportional to 3,638.48, 5,015.82 and 2,892.74 is: 3,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.48 : 5,015.82 = 2,892.74 : x
  2. Step 2: Convert to fraction form
    3,638.48/5,015.82 = 2,892.74/x
  3. Step 3: Cross multiply
    3,638.48x = 5,015.82 × 2,892.74
  4. Step 4: Simplify right side
    3,638.48x = 14,509,463.15
  5. Step 5: Solve for x
    x = 14,509,463.15/3,638.48
  6. Step 6: Final answer
    x = 3,987.78

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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.