Home / 5,135.40-7,086.96-3,039.12

Finding the Fourth Proportional to 5,135.40, 7,086.96 and 3,039.12

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Solution

The fourth proportional to 5,135.40, 7,086.96 and 3,039.12 is: 4,194.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.40 : 7,086.96 = 3,039.12 : x
  2. Step 2: Convert to fraction form
    5,135.40/7,086.96 = 3,039.12/x
  3. Step 3: Cross multiply
    5,135.40x = 7,086.96 × 3,039.12
  4. Step 4: Simplify right side
    5,135.40x = 21,538,121.88
  5. Step 5: Solve for x
    x = 21,538,121.88/5,135.40
  6. Step 6: Final answer
    x = 4,194.05

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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.