Home / 3,837.20-5,755.80-2,087.60

Finding the Fourth Proportional to 3,837.20, 5,755.80 and 2,087.60

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Solution

The fourth proportional to 3,837.20, 5,755.80 and 2,087.60 is: 3,131.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,837.20 : 5,755.80 = 2,087.60 : x
  2. Step 2: Convert to fraction form
    3,837.20/5,755.80 = 2,087.60/x
  3. Step 3: Cross multiply
    3,837.20x = 5,755.80 × 2,087.60
  4. Step 4: Simplify right side
    3,837.20x = 12,015,808.08
  5. Step 5: Solve for x
    x = 12,015,808.08/3,837.20
  6. Step 6: Final answer
    x = 3,131.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.