Home / 3,830.50-5,745.75-1,057.20

Finding the Fourth Proportional to 3,830.50, 5,745.75 and 1,057.20

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Solution

The fourth proportional to 3,830.50, 5,745.75 and 1,057.20 is: 1,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.50 : 5,745.75 = 1,057.20 : x
  2. Step 2: Convert to fraction form
    3,830.50/5,745.75 = 1,057.20/x
  3. Step 3: Cross multiply
    3,830.50x = 5,745.75 × 1,057.20
  4. Step 4: Simplify right side
    3,830.50x = 6,074,406.90
  5. Step 5: Solve for x
    x = 6,074,406.90/3,830.50
  6. Step 6: Final answer
    x = 1,585.80

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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.