Home / 3,850.32-5,777.08-2,118.80

Finding the Fourth Proportional to 3,850.32, 5,777.08 and 2,118.80

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Solution

The fourth proportional to 3,850.32, 5,777.08 and 2,118.80 is: 3,179.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.32 : 5,777.08 = 2,118.80 : x
  2. Step 2: Convert to fraction form
    3,850.32/5,777.08 = 2,118.80/x
  3. Step 3: Cross multiply
    3,850.32x = 5,777.08 × 2,118.80
  4. Step 4: Simplify right side
    3,850.32x = 12,240,477.10
  5. Step 5: Solve for x
    x = 12,240,477.10/3,850.32
  6. Step 6: Final answer
    x = 3,179.08

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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.