Home / 3,690.90-5,093.42-2,119.50

Finding the Fourth Proportional to 3,690.90, 5,093.42 and 2,119.50

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Solution

The fourth proportional to 3,690.90, 5,093.42 and 2,119.50 is: 2,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.90 : 5,093.42 = 2,119.50 : x
  2. Step 2: Convert to fraction form
    3,690.90/5,093.42 = 2,119.50/x
  3. Step 3: Cross multiply
    3,690.90x = 5,093.42 × 2,119.50
  4. Step 4: Simplify right side
    3,690.90x = 10,795,508.99
  5. Step 5: Solve for x
    x = 10,795,508.99/3,690.90
  6. Step 6: Final answer
    x = 2,924.90

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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.