Home / 3,850.89-5,777.10-1,385.91

Finding the Fourth Proportional to 3,850.89, 5,777.10 and 1,385.91

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Solution

The fourth proportional to 3,850.89, 5,777.10 and 1,385.91 is: 2,079.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.89 : 5,777.10 = 1,385.91 : x
  2. Step 2: Convert to fraction form
    3,850.89/5,777.10 = 1,385.91/x
  3. Step 3: Cross multiply
    3,850.89x = 5,777.10 × 1,385.91
  4. Step 4: Simplify right side
    3,850.89x = 8,006,540.66
  5. Step 5: Solve for x
    x = 8,006,540.66/3,850.89
  6. Step 6: Final answer
    x = 2,079.14

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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.