Home / 3,690.78-5,095.11-2,892.75

Finding the Fourth Proportional to 3,690.78, 5,095.11 and 2,892.75

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Solution

The fourth proportional to 3,690.78, 5,095.11 and 2,892.75 is: 3,993.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.78 : 5,095.11 = 2,892.75 : x
  2. Step 2: Convert to fraction form
    3,690.78/5,095.11 = 2,892.75/x
  3. Step 3: Cross multiply
    3,690.78x = 5,095.11 × 2,892.75
  4. Step 4: Simplify right side
    3,690.78x = 14,738,879.45
  5. Step 5: Solve for x
    x = 14,738,879.45/3,690.78
  6. Step 6: Final answer
    x = 3,993.43

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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.