Home / 3,929.48-5,894.30-3,145.85

Finding the Fourth Proportional to 3,929.48, 5,894.30 and 3,145.85

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Solution

The fourth proportional to 3,929.48, 5,894.30 and 3,145.85 is: 4,718.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.48 : 5,894.30 = 3,145.85 : x
  2. Step 2: Convert to fraction form
    3,929.48/5,894.30 = 3,145.85/x
  3. Step 3: Cross multiply
    3,929.48x = 5,894.30 × 3,145.85
  4. Step 4: Simplify right side
    3,929.48x = 18,542,538.45
  5. Step 5: Solve for x
    x = 18,542,538.45/3,929.48
  6. Step 6: Final answer
    x = 4,718.83

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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.