Home / 3,860.91-5,790.85-1,087.30

Finding the Fourth Proportional to 3,860.91, 5,790.85 and 1,087.30

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Solution

The fourth proportional to 3,860.91, 5,790.85 and 1,087.30 is: 1,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.91 : 5,790.85 = 1,087.30 : x
  2. Step 2: Convert to fraction form
    3,860.91/5,790.85 = 1,087.30/x
  3. Step 3: Cross multiply
    3,860.91x = 5,790.85 × 1,087.30
  4. Step 4: Simplify right side
    3,860.91x = 6,296,391.21
  5. Step 5: Solve for x
    x = 6,296,391.21/3,860.91
  6. Step 6: Final answer
    x = 1,630.80

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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.