Home / 3,800.78-5,245.73-2,808.93

Finding the Fourth Proportional to 3,800.78, 5,245.73 and 2,808.93

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Solution

The fourth proportional to 3,800.78, 5,245.73 and 2,808.93 is: 3,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,800.78 : 5,245.73 = 2,808.93 : x
  2. Step 2: Convert to fraction form
    3,800.78/5,245.73 = 2,808.93/x
  3. Step 3: Cross multiply
    3,800.78x = 5,245.73 × 2,808.93
  4. Step 4: Simplify right side
    3,800.78x = 14,734,874.32
  5. Step 5: Solve for x
    x = 14,734,874.32/3,800.78
  6. Step 6: Final answer
    x = 3,876.81

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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.