Home / 3,850.10-5,775.15-1,385.30

Finding the Fourth Proportional to 3,850.10, 5,775.15 and 1,385.30

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Solution

The fourth proportional to 3,850.10, 5,775.15 and 1,385.30 is: 2,077.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,850.10 : 5,775.15 = 1,385.30 : x
  2. Step 2: Convert to fraction form
    3,850.10/5,775.15 = 1,385.30/x
  3. Step 3: Cross multiply
    3,850.10x = 5,775.15 × 1,385.30
  4. Step 4: Simplify right side
    3,850.10x = 8,000,315.30
  5. Step 5: Solve for x
    x = 8,000,315.30/3,850.10
  6. Step 6: Final answer
    x = 2,077.95

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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.